@@trisarathops I feel you. With a generic half-good pc chrome is usable but anything above two tabs with lot of data like youtube or tweetdeck it just tortures the hardware. Firefox is better tbh.
As a tetrachromat (actually diagnosed by an ophthalmologist in the 90's as a child not from the internet during this fad) I'm perfectly okay with the loss of the "super" label. All it's ever done for me is give me an appreciation for Lisa Frank and make both my sons color blind...
Indeed. Should have tried to include one of each of several major colors -- not just RGB but also the "subtractive" colors, such as Cyan, Magenta, and Yellow. Oh, and violets. Definitely violet. AND a copy of that m#$%#^& f%^^$^%$ dress... :-D
I was thinking the exact same thing... "I'll make a video abour colors so hmm... how about the GRAYEST clothes and background combo I can possibly produce?"
@@itai7809 Yeah, and tetrachromats don't have the magical abilities many assume. They have the same red vs green and blue vs yellow channels so they don't see completely different colors, they just see more subtle variations.
@@johnalanelson A true tetrachromat which is extremely rare does have the circuitry in the brain to see color shifts and things like fringes on the edges of shadows. That is pretty magical and would be great for an artist. I am a tetrachromat and what it does for you is allow you to mix paint so it matches exactly. I am going to be painting my house interior white and I had to do a lot of research to find the paints with the highest light reflection value (LRV) because what is called white by paint companies is usually light gray, blue , green, yellow, pink, you name it which is really irritating.
I'm English too and the sky is blue and mauve at the moment. You must be from 'up north' in which case I concur. It's mostly grey with wisps of black 😜
I'm a tetrachoromat. I found out when I was getting my eyes tested while I was at Mayo clinic. They were worried I had brain damage, and eye damage from my illness. I would only describe it as having a really useless annoying superpower- the ability to tell colors only slightly differently. It will drive you crazy because you can look at shirts in the same rack, and it will all look slightly different just because of the dye mixed differently, but most people don't notice. I gave up on trying to match my clothes because even when they are say, black, they all appear to have a different undertone- sometimes blue, sometimes green. Skin color on people is pretty interesting though, because of the subtle undertones of their skin. My husband is red/green colorblind, and it drives me crazy when he says something is green when it's not green. Course I drive him crazy when I tell him something is 'blue black' or 'green black' or 'lavender white'.
Nulin22 you can start to notice that yourself if you’re a trichromatic too I believe. I think the easiest to start is with people with high amounts of melanin aka black people lol as a black person, I see different undertones: red, “orange”, yellow, blues, and even violet(?) aka purple (it’s really a deeper blue in context of the video I assume). With white people I’ve seen green before but they must’ve just had bad skin 😂 i was a kid I saw that too so maybe they ate a crayon or something haha but I have seen it as an adult. I think when I see green on pale skin is because of the veins and arteries tho... it’s harder to see it on camera or on video but definitely in person if you really open yourself to notice it. But like in my family, my sister has more yellow undertones and I have yellow and red undertones but we’re both light skin... it’s very weird.
Micah Cook I think the best way is to see how fast you can do the 100 hue test from colormunki, a techrachromat can probably get a perfect score in 10 minutes.
Micah Cook I noticed that pale skin people mostly have many different pink undertones, yellows, blues, browns, lavenders, purples, and more. I can see just as large of a rainbow on any skin color.
IMPORTANT to everybody who thinks they're colorblind because of seeing the "2" in the example in the video: this test CANNOT be done reliably on a computer screen. The wavelengths of the red, green, and blue phosphors differ between a) CRT displays, b) LCD displays, c) plasma displays, d) digital cameras, and e) the peak wavelengths of cones in human eyes. This test is only valid when printed with specific inks and viewed in specific lighting conditions. It's just like the tetrachromat example he gave in the video: your monitor and his camera don't have the capability of producing all of the colors your eyes can see, so it can't test accurately for deficiencies in your vision. Do not trust any online color test. If you are concerned because you failed a color test online, go to a real doctor.
Not quite that simple. For some of the plates, you will see one number if you have the deficiency that plate is testing for, or a different number if you don't. And then there are some with squiggly lines.
IIRC People with normal vision will see most of the number, but several important dots will not appear as part of the number because they can correctly differentiate the color is different on those dots than the rest of the dots that make up the number. People with the specific type of colorblindness see the entire number with no missing dots.
I just learned why bug zappers used to look different to me as a child when I wore glasses vs. when I wasn’t! I had my lens removed from my eye as an infant, (cataracts) and my glasses had a UV protective coating. Thank you for solving that mystery for me.
"What in nature is purple?" My go to was eggplant, but also lavender, lilac, fuscia, violet (and dozens of other kind of flowers,) Siamese fighting fish, a bunch of kinds of exotic birds... I'm not sure your point here. Yes its not a monospectral color because it requires blending, but it *is* a color because it's perceived as one. Just because most of the colors we see on a regular basis can be substituted with single frequency colored light doesn't mean that's what is actually being reflected to our eyes. We could look at something and go, "oh it's yellow!" either because it's reflecting monospectral yellow, or because it's actually reflecting green and red, but in the later case such a color is "not" yellow in the same way you're insisting purple "isn't" a color. In reality nothing inherently "has" color, because color experience is a mental phenomenon. Thus any "color" is "real" if it has been perceived.
Purple does exist in nature, it's just rare because it's harder to produce biologically. Anthocyanin is the compound that allows plants to produce purple pigment, it also changes color with PH, that's why when you crush certain berries with your hands they will stain your hands with a different color from the original color of the berry or appear almost black once dry.
I remember in 11th grade, my creative writing teacher was fighting a student so hard because she believed the perception of the dress was based on your mood.
I can see both gold and blue version on the dress or could when it were on the news - but then again im coloursensitive so i think -I hate gamefog in games since its the same as glare from sun for me - I cant see much
I was an eye specialist for part of my time in the army. All the candidates for pilot positions needed to be tested for color blindness (even the females even though they never fail). What always blew my mind is everyone who fails the test does not think they are color blind, they had no idea. They thought I was messing with them when I said no there really is a number on this slide. I felt bad having to fail somone on that test but lives depend on you seeing correctly through optics. Also on the PIP test there are slides which even the color blind can see ment as a control and one or two which have no number.
Fun fact, Monet had very bad cataracts late in his life. He had the lens of one of his eyes removed. Because of this there are paintings at the end of his life that he made where he painted the exact same scene twice using only one of his eyes each time. The result being a bright and violet painting and the other being a dark and brown painting. But each of the exact same scenery.
Me neither, but I didn't know they were not legal in the U.S. I wonder why that is ....and it explains why you can't get cassis soda in the U.S... shame because it is very tasty..
@@a_diamond The Blackcurrant plant can harbor a fungus known as White Pine Blister Rust which is fatal to American White Pine trees (since Blackcurrant is native to Eurasia and the tree has not evolved any defenses against the fungus). So in America, blackcurrant was banned in an attempt to manage and prevent the spread of the fungus.
@@a_diamond Technically, you can. It's only the Black Currant bushes that are banned in the USA and only in certain areas IIRC. You can hop on Amazon in the states right now and get black currants or all sorts of black currant products. They're just not common here because of that long-standing restriction from a long time ago. Black currants just weren't widely available and thus never became popular. That's why any purple colored candy you come across in the states will likely be a grape flavor (or some sickly artificial version thereof) Most people here have no idea what a black currant is or what its tastes like.
I'm a male and I did see a difference between the yellows. I'm guessing it had more to do with the screen I'm watching it on than anything else. One interesting thing that happened in a chemistry lab in college is that I once saw an extra spectrum line for one of the elements. The TA kept telling me I was wrong and that I was doing it incorrectly. When the ta inspected my set up and looked at exactly where I drew put the spectrum line he remarked "oh I forgot that some people can see into the UV range a little."
There is a famous series of kids detective novels in my country that did a take on tetrachromacy once. Basically, there was a failed artist who made paintings that looked plain yellow to any "normal" person but a tetrachromat would be able to notice the hidden messages on them since they were in a slightly different shade of yellow. That could still work, right?
So when you started talking about Deuteranopia, the video didn't look normal at all but I definitely saw a 2. And then I took a test that says I've got mild protanopia, but the blue-yellow colorblind part of the video looked the closest to normal. I don't know what to make of this. And I'm related to a few colorblind women!
It doesn't seem to be worded well he says if you see a "2" you're colorblind but I suspect he means the opposite because I see 2 and I'm pretty sure I'm not colorblind
Don't worry, he messed up the script. I saw a 2 as well, and I know I have normal color vision. Those tests are meant to identify a LACK of ability to discriminate between colors. Being ABLE to see the number (other than if it's the wrong number) indicates your vision is normal... at least with respect to that test. He's kind of an idiot and very arrogant. Tons of factual errors in this video.
Knowing Better Not anymore. Technically. With modern screening and jumping through the correct hoops, you can grow black currants here now. However, its extremely tough on an industrial scale and therefore it’s not profitable to sell them in supermarkets
Knowing Better Actually did some more digging, turns out they aren’t a vector for the fungus, they never were. Just a cautious albeit incorrect law passed upon this assumption. It’s since been repealed however blackcurrants have never caught on due to them being absent from the start
From what I know all occurrences of purple in nature are just different concentrations of the commonly occurring red pigment. It's the same with blue berries, they're not blue, they're really really really really deep red. Citation needed.
One of the best explanations I've seen on this subject. My color vision has the normal human range of colors, however being a serious photographer with a darkroom, I got trained in into discerning color differences. I can see 40 differences in that crappy and less than 8 bit image you shown. Sometimes it takes training. I'm also do electronic repair and during my military training those who have color blindness cannot take the course. There were color coding on the wires and components representing the numbers 0-9. I can distinguish violet from blue and purple/magenta. Violet is the narrow wavelength pass band while purple/magenta is the mix. I was taught that in my high school photography and physics classes. Women do have a sharper perception of color. Some may be the X in the 23 or hormonal. Anecdotal evidence with fellows who took estrogen for gender dysphoria or testicular and prostate cancers noticed the color perception changes. Myself included with the extension further in the violet. I used spectroscopes, K-line calcium filter on the sun and diffraction gratings to test this on and then off of the estrogen. The K-line narrow band violet solar filter image through a solar telescope with detail was seen by the most of the women and girls and some young men and some boys present at a showing. The older men and others with the difficulty saw nothing or a dim disk with no detail. Me being off of the stuff, the K-line is now dull. This happened within 3 weeks off of E.
"I can see 40 differences in that crappy and less than 8 bit image you shown." Honestly, this has more to do with your screen's ability to show similar colors. If you have relatively normal vision and can't see at least around like, 35 colors, your screen is probably just banding pretty badly.
"name one thing in nature that is purple" the inside petals of a fucia flower. Lilacs Lavender flowers The inside of a certain type of clam shell Amethyst Crushed up blueberries Bruises on certain skin tones Blackberry juice
He made a mistake, you're not supposed to see a number if you have this condition. This circle is part of a color blindness test, you have different circles for different types of color blindness, if you don't see the number in a certain group of circles that means you have the type of color blindness that those circles tests for.
"Think about it, what in nature is purple?" * Immediately thinks of a purple Iris flower * "You probably thought of grapes...." * Never mentions plants beyond that * Uhh..... * Looks over to the purple shamrock plant on the table beside me, looks up to my penny black nemophila that has dark purple flowers, looks at my Tradescantia spathacea..... Etc...... * Dude lots of plants are purple or have purple flowers or accents......... Like. The plant equivalent of melanin is literally purple. In fact once upon a time all plants were purple. Like I'm not saying you're wrong that our version of purple isn't like. Idk an approximation or whatever, but. I would have liked an explanation for all the purple plants everywhere if it apparently doesn't exist...
Also vetch and some thistles. Not saying they aren't mixed to get there but the appearance is there color is there. I believe blue is more rare in naturally occurring vegetation than purple. But flowers colors are meant to be seen by insects and birds and not us so there are ultraviolet bits in them too. Veritasium/physics girl did cool videos on it.
Thats a fun story and all, but the facts is that those plants ain't purple. From my seconds of online research, I have discovered that so-called "purple" plants are plants that contain more anthocyanin than chlorophyll. They just absorb green light better than chlorophyll does, so they shoot red and blue light back into our eyes, which, as said by Mr. Video Man, our brain then perceives as purple. Your point that there exists plants that our brain says our eyes say is purple, doesn't mean that purple is actually happening in nature. Bitch.
@@TheSimon253 "The growing and importation of currants were banned in New York and other parts of the United States for more than half a century because they were thought to help spread a fungus that threatened the timber industry."
Fun fact about me, I was born super early so my eyes were under developed. I was classified legally blind at birth but through corrective lenses and surgery I can now see well with glasses and still poorly but well enough without them. I also have an issue with light brightness (if its bright out I cant see shit, if it's dark out I can see shit), and differentiating browns from each other (the only time this is usually in issue is with shows shot dimly, video games with a very brown color scale, or paintings with lots of brown). There are some shades of brown I literally cannot tell apart from one another.
Full achromat here. I actually did see a (slight) difference when you switched to the achromatopsia filter. And yeah, I go outside with red-lensed sunglasses. I'd be completely noctural if society would let me get away with it.
Hey for what its worth, I read your reply, and when I got to the sunglasses part, my 13-year-old comic-loving self from the past screamed in my brain "JUST LIKE CYCLOPS!"
I had always wondered why there were no in-between answers for the dress, I saw it as a washed out blue and kindof a worn-brass color(brown, less specifically) Later I watched a video of someone dissecting the image(as well as the shoe image), and revealed that the actual colors appearing on ones computer screen are indeed washed out blue and brown.
I've only seen it as a pale blue with muddy gold. So basically the way you describe it. I would like to know what video that was though (I haven't seen it & have only happened across a couple of references to the blue/brown combo being seen at all.)
I posted a large comment about this but basically if you see it as black and blue it's because you either knew it was black and blue to start with or you have a more intuitive sense of how light effects color. The pixels are dim bluish white and dingy brown. So if you see it as "white and gold" you're talking about the image that you're seeing. If you see it as "blue and black" your brain is at the very least doing a bit of gymnastics to reach a more correct answer. Like he said it has nothing to do with your eyes. Everything to do with your brain.
“Purple is not a natural color. think about it, what in nature is purple?” Wisteria. Pansies. Asterwoods. Eggplant. Amethyst coral fungus. A few other fungi. Purple lichens. Violet backed starlings. Guoldian finch. Jarcaranda trees.
Well boyo I hate to break it to you, but the world around you IS a weird vapourwave cyberpunk cyan and magenta wonderland. You just can't realise it. xD
With the "no purple in nature" example, my mind actually jumped immediately to flowers. there are some flowers that can be a very, very deep and distinct purple. How do you explain that? Moreover, how do you explain the brain's interpretation of there being purple at ll if there's no such thing?
In my opinion, purple is either just weird blue or weird red. God, 7 year old me would be so offended by what I just said, I loved purple a lot back then
I think there's a particular opinion that violet and purple aren't the same thing, because purple (not referring to our perception of a color) isn't a light wavelength that can be reflected. Which is the only way you can really justify saying that... because violets are... well, violet. Which to normal people means they are purple. You essentially have to be in the camp that doesn't think a kajillion different colors exist in nature, because you classify them as degrees of already existing colors. So to those people, colors like 'lime green' or 'periwinkle' or 'burnt umber' or 'cerulean' don't exist in nature from a scientific perspective. And purple is in that same category as all of those color combinations that don't have their own light wavelength or something. I'm not an expert, and really bad at explaining so I would take this with a massive spoonful of salt and do your own research but yeah. That's basically how I understand that.
IndoDINO TH-cam ultraviolet rays exist so amethyst is more a violet. It’s a crystal anyway too but I don’t know how the light makes it violet. If you look at uvlights you’ll notice a lot in nature is giving off that color than our standard rich purple. I believe our context for true purple has some more reds or blues to it.
1:28 I'd say it's a firmware issue rather than software issue, implying neurology rather than psychology. Great, interesting and informative video BTW!
The best part of this video was showing your ability to distinguish between "less" and "fewer". I, unfortunately, have been slowing losing this ability ever since I started using the internet.
I just discovered this channel a couple of days ago; you are doing a really fantastic job, congratulations and thank you for your work and integrity! 6:20 FYI: "Currant" (Blackcurrant, redcurrant) is pronounced the same as current. (Electrical current, current affairs)
People saw it as gold and white because it was lit terribly and the camera is bad. My solution to that connundrum was to look at the pixels. And they weren't dark blue and black. They were a dim bluish white and a dingy brown. Honestly if you see that picture as a black and blue dress, it's because your mind is taking a second longer to process what you're looking at. Your brain is taking a second to correct for the image's terrible lighting. And if you see it as white and gold you're not. You're looking at the pixels and not seeing any black at all. Your brain isn't factoring in the light the way some other people might. You might not recognized that the image is terribly lit, in which case your mind doesn't do the work to extrapolate what the actual colors might be. The Image is white and gold (closer to a dim light blue and dingy brown as I said before), the dress is black and blue. It certainly has nothing to do with your eyes.
Interesting idea, and probably right. I know I can see the full spectrum, never had any color blindness related troubles, but this dress is white and gold to me. There was one time when I saw it with a different light and suddenly I saw it as blue and black, but the original picture didn't leave any doubt when I first saw it.
Poorly lit photos don’t usually result in major color changes like that. I’m convinced that they were in fact two different dresses. Only way I would know for certain that it’s different perceptions of the same photo, is if someone prints it off and I see it still as the white and gold, and someone looking at the photo that claims it is different is looking at the same photo.
@@starcrafsf7101 My family all looked at the same picture on my phone, I saw it white and gold and so did my sister but everyone else saw it blue and black.
@@saggybobby3733 yea i just pulled up the picture and had my brother look at it. so we were looking at the same exact image, and yet seeing two very different things. weird
I was sent to the principal's office in 3rd grade because I defended a friend who got into trouble for coloring a picture of our teacher, using a green crayola to color her hair. She thought it was an act of insurrection by a 9 yeat old Fidel Castro. And I played the part of Che Guevera. She didnt believe either of us. When I got home , crying and sure I was going to be disciplined, I had to explain my friends color blindness to my father. He listened to my sobs and my story. And patted my head with a smile and congratulated me for defending a friend. I believe that day my father grew 2 feet taller and became my hero. A call from my father to the school the next day and both me and my friend were given a very tepid, half assed apology by the teacher.
It's a quote from Yugioh the Abridged series, and is relevant to the conversation since the character in question who says the quote is an egotistical git with tyrannical tendencies.
vanishedspartan For someone referencing the abridged series, I expected you to notice my reply was also a reference. Apparently I was mistaken, even though that quote comes in a few seconds after the part about green hair.
My eye doctor told me I had an unusually wide color spectrum when I was fifteen. The more I learn about people who can actually see outside the normal spectrum the more I am convinced I either wasn’t paying attention to what he actually told me or I was lied to. Probably the former. I am really good at identifying slight differences in color though.
Since I had my injured lens removed and replaced with a implant everything is brighter and a little washed out in that eye. Kind of like how harsh fluorescent lighting can be.
Great video. You can also train your brain to come more aware of the real colors you're seeing. This is typically something artist learn, and become more hone over time. I've looked at the world very differently since getting an art degree. I see the world as hues, shades, tints, gradient, patterns, variations of light, etc.
I have heard that you can get better at detecting differences in colors; another potential reason that spectrum test doesn't work. It has been years since I read whatever article that was, but it was pointing at graphic designers as people that tend to get better due to their need to put that skill to use.
I know I'm late to the party but I did notice the line between the two yellows colors and did notice the that green as added before he mentioned it. Being male I'm positive I'm not tetrachromatic but I do do graphic design as a hobby. It seems my anecdote would support this being the case.
I know I’m late to the party but as a guy who has fiddled with minor variations of color (mostly things like the difference between 0x888888 and 0xAAAAAA) I was able to distinguish the different yellows side by side. It definitely seems like practicing color differentiation helps improve your ability to perform color differentiation, the same way that practice improves any other activity.
@@captainhoratiobungleiii7147 'Blackcurrants were once popular in the United States as well, but became less common in the 20th century after currant farming was banned in the early 1900s, when blackcurrants, as a vector of white pine blister rust, were considered a threat to the U.S. logging industry.'... Wikipedia 🤣
Him: think about it, is there anything in nature that is purple? Mia Forté : lilac- Him: you probably thought of grapes Me: "Violet! You're turning Violet, Violet!" (Cue the oompa loompas)
the funny thing is, he used a picture of an american grape (Muscadinia or Vitis rotundifolia). there are european grape (Vitis vinifera) varieties that are much more convincingly purple
I could spot the difference between the two yellows. It's interesting except for what you mentioned just before that about that we can't do any online test to know because it's all pixels. For the dress, I first said it was black and blue, but after a bunch of arguing over it, I sat and considered to intentionally look at it as white and gold and I could see it. I think it's more of a mental perspective shift because of the lighting. I could see it as both.
As a colour blind women I feel slightly hurt!! 😂 my mother is a carrier, so I received one copy from her. As for the other one my father says he isn’t colour blind, so I’m not sure if he is colour deficient and doesn’t necessarily realize or if I really got a bad deal from the luck of the genetic draw! 😵 I find that to be REALLY unlikely though.
Yeah he kind of messed that up. Women can be colorblind too. It's on the x chromosome and is a recessive gene, so if you have two x chromosomes (i.e. are a woman) then you need both of them to have it, which is rarer than just having one x chromosome that has it.
He either doesn’t realize he’s colorblind or your mom cheated. Unfortunately, it’s one or the other. I recommend you give your dad a colorblind test and if he passes with flying colors your mom is going to have some explaining to do.
Yes, or at least it was for long enough that the flavour is foreign and alien to Americans. That's why Americans have grape flavoured things where in the rest of the world, it would be blackcurrant.
The “purple party filter” is actually a secondary emision line of the UV phosphor used in black lights. Over 90% of the light emitted actually falls in the UVA spectrum. It’s ultraviolet in the sense that its too short of a wavelength to see, but too long to be ionizing.
I've never been able to get a good answer about my eyes, not even from an optometrist. When it's really sunny outside, everything looks blueish/violet gray out of my right eye, but vividly colorful out of my left eye. I have a slight astigmatism, my left eye is -0.25(nearsighted) and my right eye is +0.50(farsighted). I've always wondered if it's because the different shapes are stretching the wavelength of light so that I'm being blinded by ultraviolet in my right eye. One sees really well far away and the other up close, so I have 20/16, but it gives me headaches by the end of the because one is always struggling to focus.
Nope. That isn’t how that works. The cornea absorbs UV C and the lens absorbs UV B. (The retina absorbs UV A which is why you still should avoid looking directly at the sun or arc weld with the right mask.) Those would be blocked from hitting the light-sensitive retina evenly between your eyes regardless of nearsightedness/farsightedness. If you are concerned about the difference in colors between your eyes in certain lighting conditions, it is most likely due to a defect in the lens (aka a cataract) which may scatter certain wavelengths unevenly, or a defect in optic nerve due to some type of damage which may have occurred along time ago. Also, if you are having trouble with headaches/eye strain at the end of the day, start by wearing your glasses or contacts the whole day (that you are awake) for a week or two. If it doesn’t help, you probably have an eye muscle issue that can usually be help with vision therapy, which is similar to physical therapy but for your eyes. Also, because it is a pet peeve, having astigmatism is basically insignificant in almost every case and really truly is not bad nor does it make you special.
Some people do have different color perception between their eyes. Perhaps you have something else going on like being a chimera where the cells in one eye are genetically different than the other eye. It's rare, but it happens. An opthalmologist (eye doctor/surgeon) might be able to answer your questions.
"I've always wondered if it's because the different shapes are stretching the wavelength of light" well clearly you have no idea what you're talking about. we know that for sure
Onions are purple. Also I've only ever seen that dress as white and gold. It's just an optical illusion, my dude. You're not wrong for seeing it a different way than somebody else.
At one time I ran a number of vision tests at work and noticed that about 1/4 of the men had issues with the "what do you see" tests. Stuff that just leaped out to me had them scowling and staring, and eventually reaching out with a finger to trace the correct shape. They could see it, but it was difficult. They also had issues with differentiating similar colors from each other. It was then that I realized that a lot of my arguments with people over the years about what color something was was "we're both right."
I have a friend that is color blind and just recently found out from him that there is more than one type of color blindness. I had no idea about that. This really helped educate me. Thank you! I have another friend with a color blind son and they recently got those glasses for him. It was a very emotional experience for the whole family when he saw the world in "full color" for the first time.
There are a few variations with some sub-variation. A Google search provided me with protanomaly, protanopia, tritanomaly, tritanopia and monochromacy.
@@Skyluzz there isn't a recently found color blindness. they just said that they had recently learned about the various forms of color vision deficiency
10:57. UV light. WHAT IS THAT WHITE STUFF ON THE LEFT SIDE OF YOUR FACE?!?!?!?! 😱😱😱😱 I’m totally kidding! I am red/green colorblind and I found this video very informative. Thank you!!!!
@@tristanlj3409 Well I know a guy who can see all kinds of colors inside of colors that the rest of us see as one shade only. He said he was tetrachromatic and I have no reason to doubt him.
I always knew that I could distinguish between subtle shades of colors. I also read that if you saw white and gold or blue and black, it was because of the screen you were looking through. From your examples I believe I'm a tetrachromat and I'm a female. I've had men in my life that, I don't believe they were color blind, didn't see colors the same as me. I chocked it up to male and a lack of interest.
@Sigma Chad It's not an illness. I was an art student when I was younger and always saw the subtle differences in subtle shades of color. I continued seeing the differences and never thought anything of it. I still don't since my close vision has deteriorated with age. Hopefully, I will be able to afford a new pair of glasses next year because it's hard to see clearly when your vision is blurry.
I read at one point that a good number of bird species do have a fourth cone and can see somewhat past the wavelength we call violet, although some birds see farther into the ultraviolet range than others. Apparently some birds that look drab to us (and to most predators) actually look vibrant to potential mates because some of their feathers reflect ultraviolet. I read something like that about bees and certain ultraviolet-colored flowers as well. It's been long enough since I looked into it that I'm taking even my own words with a grain of salt, but it does seem like there are animals out there that get more use out of being tetrachromats, because their fourth cone isn't as redundant as a human's yellow cone!
What you're seeing is a cascade of errors. First, the test card he's showing probably isn't an actual card from an Ishahara color test set, but one printed on a computer printer with its inaccurate inks. This was then photographed with his camera, which has inaccurate color filters on its sensor, in a room lit by lights that are probably not continuous spectrum lights. Then it got h.264 encoded to be put online, which limits the colors. Then you watched it on your computer monitor, with its inaccurate color filters, backlit by either LEDs or cold-cathode fluorescent tubes that have their own spectrum deficiencies, in a room also lit by non-continuous-spectrum light sources. It's almost a miracle that ANYBODY sees the correct pattern. And by the way, NO online test can accurately diagnose color deficiencies, for the reasons already given.
Merlot grapes are extremely purple sir! Many red bordeaxs as well. Also, violets are pretty purple. I also had one hell of a purple hibiscus on my fence at the old house!
The way you said blackcurrant was adorably American. I both love and hate how Brits and Yanks can't read our own language when the other uses it. Blackcurrant is spoken as "blak ku-rnt." Basically, black is black, and currant is actually current, as in 'water current.' On a lighter note, I'm sorry you don't have any blackcurrant. It's really nice, and great in Ribena.
@Jeremy Shuler It's a brand of drink we call "Squash", a type of flavoured syrup you mix with water, and Ribena is like the best one, better than Kool Aid
Canadian currently living in the US. I have found places in the US that sell Ribena but it's clearly not even close to as popular back home. Drinking some right now. Don't think I've consumed blackcurrant in any other form.
the y chromosome does not code for cones and it could be said that the people who thought that the dress was white and gold had malfunctioning color constancy because they weren't able to see the actual colors
I've been going back to watch your videos, as I await for new stuff, and the first time you showed the dress I saw white and gold. After you explained things, I went back to look at the dress again and I saw black and blue. I would be a terrible witness.
I'm pretty sure there's a kind of Mediterranean sea slug or snail or something which makes a purple substance that gets turned into a purple dye (Tyranian purple or something like that?). And, of course, iridescence often creates purple hues. But aside from that...yeah, the closest I can think of are some deep reds.
I think all talking TV animals are required to be British. I often wonder, when I'm not watching TV, but it's on in the background, why the Geico gecko is talking about TripAdvisor.
All the "at home tests" that test for "tetrachromats" are accomplished by anyone with regular color vision who have careers concerned with colors. Artists, interior designers, painters ect. Most color differentiation seems to come from practice more than anything.
I have always had an uncanny ability to differentiate between similar colors. It's honestly more of an annoyance than anything. People wear clothes that are close enough to pass but the slightest difference in color drives me mad.
I totally had to pause this at 11:45 and come back to it later bc I felt that seizure feeling I outgrew at 12 (if you had or have seizures you know what I mean) Great video though!!! You should definitely do a video on how colors can bring on epileptic seizures.
yes im tetrachromatic.
i can see four chrome tabs simultaneously, it just takes a lot of ram.
AniMesuro as a firefox User im shocked you can have more than two tabs open before your computer shuts down
@@trisarathops I feel you. With a generic half-good pc chrome is usable but anything above two tabs with lot of data like youtube or tweetdeck it just tortures the hardware.
Firefox is better tbh.
@@trisarathops I'm a Pintocromat because I literally have 10 tab's right now.
XD
*has so many tabs open the count is just a smiley face lol* (yeah, I should really close these already..)
All I see is red
Joseph Stalin Not big surprise, comrade.
Waddup, comrade?
Oh god blood everywhere
Joseph Stalin That made you the boss. You couldn't find the tools (like hammer and sickle) to work with.
who tf is this nonce
As a tetrachromat (actually diagnosed by an ophthalmologist in the 90's as a child not from the internet during this fad) I'm perfectly okay with the loss of the "super" label. All it's ever done for me is give me an appreciation for Lisa Frank and make both my sons color blind...
But Lisa mothafuckin Frank was AMAZING
Lisa Frank who?
You took their cones, you monster
I just got diagnosed with the encouragement of my boyfriend. It was the most underwhelming positive outcome ever. I don’t even like yellow.
Hot Plan of Action
Has there been any instances where you saw colors someone else couldn't?
I feel like you should have had more colorful items in the background so the filters would have a more noticeable effect
Indeed. Should have tried to include one of each of several major colors -- not just RGB but also the "subtractive" colors, such as Cyan, Magenta, and Yellow.
Oh, and violets. Definitely violet.
AND a copy of that m#$%#^& f%^^$^%$ dress...
:-D
Agreed
I was thinking the exact same thing... "I'll make a video abour colors so hmm... how about the GRAYEST clothes and background combo I can possibly produce?"
I agree
"Is this purple?"
"Yea-"
*_"What the fuuu-"_*
Doki Doki that video was so heartwarming
I think the same thing everytime I see purple
That clip was hilarious!!
Cute, like when deaf kids hear their parents for the first time
14:51 Actually it is theoretically possible for a guy to be a tetrachromat, if he has Klinefelter syndrome, XXY but I don't know of any examples.
ah true!! good catch.
the chance of this is already pretty low and if you add the low chance of functional tetrachromacy there probably isn't one
@@itai7809 Yeah, and tetrachromats don't have the magical abilities many assume. They have the same red vs green and blue vs yellow channels so they don't see completely different colors, they just see more subtle variations.
@@johnalanelson A true tetrachromat which is extremely rare does have the circuitry in the brain to see color shifts and things like fringes on the edges of shadows. That is pretty magical and would be great for an artist. I am a tetrachromat and what it does for you is allow you to mix paint so it matches exactly. I am going to be painting my house interior white and I had to do a lot of research to find the paints with the highest light reflection value (LRV) because what is called white by paint companies is usually light gray, blue , green, yellow, pink, you name it which is really irritating.
I think that falls under minsinformed.
Please help... It has been five months, and I'm still seeing Mona Lisa.
🤣🤣🤣
Of all the art pieces to be burned into your eyes, at least the Mona Lisa is classy.
@@jacobp.2024 True.
Well, idk what to say but have fun seeing mona lisa in your dreams
I've decided to rewatch the video. I haven't learned a thing!!! haha
I'm English, the sky is never blue.
I'm English too and the sky is blue and mauve at the moment. You must be from 'up north' in which case I concur. It's mostly grey with wisps of black 😜
No.The sky is red *communism intensifies*
The sky is black you rasiaisits
it's grey
It's night here.
I'm actually crying at "that is how a mantis shrimp do" omg
@@judahcoop6804oh yeah. I hope you fall face first into your toilet bowl.
@@judahcoop6804 suuuuuuure
Yeah, almost spit some beer out my nose xD
You'll love all his videos then. He's really funny.
I heartily endorse zefrank, he's so goddamn funny
Purple doesn't exist. This comment made by Orange gang
Owen Billo
Your profile picture is purple
Exposed
Represent!!!!
EXPOSED
Owen Billo .... says this with a purple profile picture
"Is this purple?"
"Yes"
"What the fu"
Omg I'm dying XD
AndreiRomanul cute reaction
9:14
I'm a tetrachoromat. I found out when I was getting my eyes tested while I was at Mayo clinic. They were worried I had brain damage, and eye damage from my illness. I would only describe it as having a really useless annoying superpower- the ability to tell colors only slightly differently. It will drive you crazy because you can look at shirts in the same rack, and it will all look slightly different just because of the dye mixed differently, but most people don't notice. I gave up on trying to match my clothes because even when they are say, black, they all appear to have a different undertone- sometimes blue, sometimes green. Skin color on people is pretty interesting though, because of the subtle undertones of their skin. My husband is red/green colorblind, and it drives me crazy when he says something is green when it's not green. Course I drive him crazy when I tell him something is 'blue black' or 'green black' or 'lavender white'.
You must really be one if you can see many subtle undertones in skin
Nulin22 you can start to notice that yourself if you’re a trichromatic too I believe. I think the easiest to start is with people with high amounts of melanin aka black people lol as a black person, I see different undertones: red, “orange”, yellow, blues, and even violet(?) aka purple (it’s really a deeper blue in context of the video I assume). With white people I’ve seen green before but they must’ve just had bad skin 😂 i was a kid I saw that too so maybe they ate a crayon or something haha but I have seen it as an adult. I think when I see green on pale skin is because of the veins and arteries tho... it’s harder to see it on camera or on video but definitely in person if you really open yourself to notice it. But like in my family, my sister has more yellow undertones and I have yellow and red undertones but we’re both light skin... it’s very weird.
Micah Cook I think the best way is to see how fast you can do the 100 hue test from colormunki, a techrachromat can probably get a perfect score in 10 minutes.
Micah Cook I noticed that pale skin people mostly have many different pink undertones, yellows, blues, browns, lavenders, purples, and more.
I can see just as large of a rainbow on any skin color.
So when my mom says that black is blue?
IMPORTANT to everybody who thinks they're colorblind because of seeing the "2" in the example in the video: this test CANNOT be done reliably on a computer screen. The wavelengths of the red, green, and blue phosphors differ between a) CRT displays, b) LCD displays, c) plasma displays, d) digital cameras, and e) the peak wavelengths of cones in human eyes. This test is only valid when printed with specific inks and viewed in specific lighting conditions. It's just like the tetrachromat example he gave in the video: your monitor and his camera don't have the capability of producing all of the colors your eyes can see, so it can't test accurately for deficiencies in your vision. Do not trust any online color test. If you are concerned because you failed a color test online, go to a real doctor.
BrightBlueJim I saw an 8 lol
Uhm, isn't it as simple as that you're supposed to see the the number if you have normal color vision?
Not quite that simple. For some of the plates, you will see one number if you have the deficiency that plate is testing for, or a different number if you don't. And then there are some with squiggly lines.
IIRC People with normal vision will see most of the number, but several important dots will not appear as part of the number because they can correctly differentiate the color is different on those dots than the rest of the dots that make up the number. People with the specific type of colorblindness see the entire number with no missing dots.
oh thank you, i really freaked out before
Wait..what about purple Flowers?!
dont you mean white and gold flowers?
those are called violets
"Purple" is just a name we've slapped on "dark red/blue mixture"
Their dyes either contain multiple chromophores, or a mixture of pigments!
Or eggplant, or fish?
I just learned why bug zappers used to look different to me as a child when I wore glasses vs. when I wasn’t! I had my lens removed from my eye as an infant, (cataracts) and my glasses had a UV protective coating. Thank you for solving that mystery for me.
If you can only get tested for tetrachromacy in a lab, there are probably lots of tetrochromats who don't even know that they're tetrochromats.
Absolutely. I am still not certain if I am teteachromatic or not, but my colour perception was employed by my coworkers in the 1990s.
"What in nature is purple?"
My go to was eggplant, but also lavender, lilac, fuscia, violet (and dozens of other kind of flowers,) Siamese fighting fish, a bunch of kinds of exotic birds... I'm not sure your point here.
Yes its not a monospectral color because it requires blending, but it *is* a color because it's perceived as one. Just because most of the colors we see on a regular basis can be substituted with single frequency colored light doesn't mean that's what is actually being reflected to our eyes. We could look at something and go, "oh it's yellow!" either because it's reflecting monospectral yellow, or because it's actually reflecting green and red, but in the later case such a color is "not" yellow in the same way you're insisting purple "isn't" a color.
In reality nothing inherently "has" color, because color experience is a mental phenomenon. Thus any "color" is "real" if it has been perceived.
Nah all of those things are either spicy blue or cold red.
Deny the purple, reach for the truth.
s p i c y b l u e
Ah, the moment when a science argument becomes a philosophy argument.
Purple does exist in nature, it's just rare because it's harder to produce biologically. Anthocyanin is the compound that allows plants to produce purple pigment, it also changes color with PH, that's why when you crush certain berries with your hands they will stain your hands with a different color from the original color of the berry or appear almost black once dry.
Lilac
Lila - c = Lila
Lila means purple in Swedish.
I remember in 11th grade, my creative writing teacher was fighting a student so hard because she believed the perception of the dress was based on your mood.
yeah, and there's some idiots, a lot of idiots actually, who think a person's eyes change colors depending on what they're wearing. omg.
So is it like a mood right that everyone perceives differently and that's how you know your mood? I'm confused lmao
You've worded this strangely. Are you saying the student thought the dress color was based on mood or was the teacher saying that?
@@HOTD108_Was about to say the samething.
I can see both gold and blue version on the dress or could when it were on the news - but then again im coloursensitive so i think -I hate gamefog in games since its the same as glare from sun for me - I cant see much
I was an eye specialist for part of my time in the army. All the candidates for pilot positions needed to be tested for color blindness (even the females even though they never fail). What always blew my mind is everyone who fails the test does not think they are color blind, they had no idea. They thought I was messing with them when I said no there really is a number on this slide. I felt bad having to fail somone on that test but lives depend on you seeing correctly through optics. Also on the PIP test there are slides which even the color blind can see ment as a control and one or two which have no number.
Testing women (afab) makes sense. Many intersex people don't know they are intersex.
So what was on his chin???
Dustin Brookens xD
I was wondering that too
Looking for this comment, can't believe more people didn't notice. I actually laughed
After shave...?
I was thinking it's the florescent stuff found in hotel rooms.
That UV light something-got-on-my-face reveal was hilarious!!!
Fun fact, Monet had very bad cataracts late in his life. He had the lens of one of his eyes removed. Because of this there are paintings at the end of his life that he made where he painted the exact same scene twice using only one of his eyes each time. The result being a bright and violet painting and the other being a dark and brown painting. But each of the exact same scenery.
.... I've never hears currants called "cur-RANT"s before lol
Me neither, but I didn't know they were not legal in the U.S. I wonder why that is ....and it explains why you can't get cassis soda in the U.S... shame because it is very tasty..
@@a_diamond The Blackcurrant plant can harbor a fungus known as White Pine Blister Rust which is fatal to American White Pine trees (since Blackcurrant is native to Eurasia and the tree has not evolved any defenses against the fungus). So in America, blackcurrant was banned in an attempt to manage and prevent the spread of the fungus.
How have you heard it?
@@a_diamond Technically, you can. It's only the Black Currant bushes that are banned in the USA and only in certain areas IIRC. You can hop on Amazon in the states right now and get black currants or all sorts of black currant products. They're just not common here because of that long-standing restriction from a long time ago. Black currants just weren't widely available and thus never became popular. That's why any purple colored candy you come across in the states will likely be a grape flavor (or some sickly artificial version thereof)
Most people here have no idea what a black currant is or what its tastes like.
@@731freeman Blackcurrant like black-current as in the river has a strong current
what in nature is purple?
me: flowers
him: no
at 11:00 you can see some stains on his face under the UV lights... What are they?
Hmmm...
They are the joke
CUM
it was really uncomfortable noticing them each and every moment xD
Vladimir Putin hair dye, probably.
I'm a male and I did see a difference between the yellows. I'm guessing it had more to do with the screen I'm watching it on than anything else. One interesting thing that happened in a chemistry lab in college is that I once saw an extra spectrum line for one of the elements. The TA kept telling me I was wrong and that I was doing it incorrectly. When the ta inspected my set up and looked at exactly where I drew put the spectrum line he remarked "oh I forgot that some people can see into the UV range a little."
Yeah, I saw it too. It's most certainly just the screen.
@@kcufbla i did see a difference but not greenish yellow...more like dull yellow
has more to do with bullshit.
@@seanothepop4638 if you're talking about the yellows: nope, they're definitely different. One is #FDF200 the second one is #FCF600
There is a famous series of kids detective novels in my country that did a take on tetrachromacy once. Basically, there was a failed artist who made paintings that looked plain yellow to any "normal" person but a tetrachromat would be able to notice the hidden messages on them since they were in a slightly different shade of yellow. That could still work, right?
Wrong.
@@HOTD108_ understandable, have a great day?
Die drei ??? ?
So when you started talking about Deuteranopia, the video didn't look normal at all but I definitely saw a 2. And then I took a test that says I've got mild protanopia, but the blue-yellow colorblind part of the video looked the closest to normal. I don't know what to make of this. And I'm related to a few colorblind women!
Damn! What a way to find out you are colorblind. Sorry to hear about that.
I can see the 2 as well, I'm colour blind!?
It doesn't seem to be worded well he says if you see a "2" you're colorblind but I suspect he means the opposite because I see 2 and I'm pretty sure I'm not colorblind
Or you just have deuteranopia. It's relatively mild color-blindness.
I'm full colorblind and didn't see anything there.
Don't worry, he messed up the script. I saw a 2 as well, and I know I have normal color vision.
Those tests are meant to identify a LACK of ability to discriminate between colors. Being ABLE to see the number (other than if it's the wrong number) indicates your vision is normal... at least with respect to that test.
He's kind of an idiot and very arrogant. Tons of factual errors in this video.
Wait wait wait wait..... you guys don't have blackcurrants? In a already mind-blowing kind of video this really floored me.
It's apparently a disease vector that threatens North American pine, so it's been banned for the last hundred years.
Never thought idd find you here :)
some states have allowed import and cultivation of blackcurrant since 2013 or so.
Knowing Better Not anymore. Technically. With modern screening and jumping through the correct hoops, you can grow black currants here now. However, its extremely tough on an industrial scale and therefore it’s not profitable to sell them in supermarkets
Knowing Better Actually did some more digging, turns out they aren’t a vector for the fungus, they never were. Just a cautious albeit incorrect law passed upon this assumption. It’s since been repealed however blackcurrants have never caught on due to them being absent from the start
6:06 did you forget about flowers for a minute? Like lavenders? I have seen purple wildflowers often.
From what I know all occurrences of purple in nature are just different concentrations of the commonly occurring red pigment. It's the same with blue berries, they're not blue, they're really really really really deep red.
Citation needed.
Lavenders are lavender
One of the best explanations I've seen on this subject. My color vision has the normal human range of colors, however being a serious photographer with a darkroom, I got trained in into discerning color differences. I can see 40 differences in that crappy and less than 8 bit image you shown. Sometimes it takes training. I'm also do electronic repair and during my military training those who have color blindness cannot take the course. There were color coding on the wires and components representing the numbers 0-9. I can distinguish violet from blue and purple/magenta. Violet is the narrow wavelength pass band while purple/magenta is the mix. I was taught that in my high school photography and physics classes. Women do have a sharper perception of color. Some may be the X in the 23 or hormonal. Anecdotal evidence with fellows who took estrogen for gender dysphoria or testicular and prostate cancers noticed the color perception changes. Myself included with the extension further in the violet. I used spectroscopes, K-line calcium filter on the sun and diffraction gratings to test this on and then off of the estrogen. The K-line narrow band violet solar filter image through a solar telescope with detail was seen by the most of the women and girls and some young men and some boys present at a showing. The older men and others with the difficulty saw nothing or a dim disk with no detail. Me being off of the stuff, the K-line is now dull. This happened within 3 weeks off of E.
"I can see 40 differences in that crappy and less than 8 bit image you shown."
Honestly, this has more to do with your screen's ability to show similar colors. If you have relatively normal vision and can't see at least around like, 35 colors, your screen is probably just banding pretty badly.
Interesting! Thanks for posting.
@@KingBobXVI wish i saw it before trying to configure my screen though
The older people might just have cataracts and yellowed lenses.
@@ooqui Partially true. The aging of the opotorecertors in the eyes age as well.
Dude, there are purple flowers. There are purple plants. Purple happens in nature, it's not a grape conspiracy.
Lavender
I thought of bluebells too. Interesting about those, they look blue in pics but but look like an electric indigo-purple in person.
I think they are actually considered violet...
There are also purple grapes
@@jayteegamble they are light blue
"name one thing in nature that is purple"
the inside petals of a fucia flower.
Lilacs
Lavender flowers
The inside of a certain type of clam shell
Amethyst
Crushed up blueberries
Bruises on certain skin tones
Blackberry juice
If I recall correctly the flowers are a combo of red and green, though I might e mistaken
"Name one thing in nature that's purple"
A grape juice container thrown out in the woods somewhere.
Amethyst are not really purple, but the way they diffuse light makes them look purple.
@@DiamondPugs if something is trying that hard to be purple, it might as well be purple. Let him have it.
@@DiamondPugs technically nothing has color it just reflects light in a way that makes it look like it has color
4:28 I saw a 2, but I full colour vision
What?
He put the filter over it thats why
He made a mistake, you're not supposed to see a number if you have this condition. This circle is part of a color blindness test, you have different circles for different types of color blindness, if you don't see the number in a certain group of circles that means you have the type of color blindness that those circles tests for.
I saw an 8
@@prettyhatemachine8887 fuck me I spent 10 minutes on color blind tests because I saw the 2
i saw a 2 too and im a female with full colour vision
"Think about it, what in nature is purple?"
* Immediately thinks of a purple Iris flower *
"You probably thought of grapes...." * Never mentions plants beyond that *
Uhh..... * Looks over to the purple shamrock plant on the table beside me, looks up to my penny black nemophila that has dark purple flowers, looks at my Tradescantia spathacea..... Etc...... *
Dude lots of plants are purple or have purple flowers or accents......... Like. The plant equivalent of melanin is literally purple. In fact once upon a time all plants were purple.
Like I'm not saying you're wrong that our version of purple isn't like. Idk an approximation or whatever, but. I would have liked an explanation for all the purple plants everywhere if it apparently doesn't exist...
i thought that too
I was thinking of all the purple potato and eggplant I've had.
Those purple flowers actually have red and blue pigments mixed together.
Also vetch and some thistles. Not saying they aren't mixed to get there but the appearance is there color is there. I believe blue is more rare in naturally occurring vegetation than purple. But flowers colors are meant to be seen by insects and birds and not us so there are ultraviolet bits in them too. Veritasium/physics girl did cool videos on it.
Thats a fun story and all, but the facts is that those plants ain't purple. From my seconds of online research, I have discovered that so-called "purple" plants are plants that contain more anthocyanin than chlorophyll. They just absorb green light better than chlorophyll does, so they shoot red and blue light back into our eyes, which, as said by Mr. Video Man, our brain then perceives as purple. Your point that there exists plants that our brain says our eyes say is purple, doesn't mean that purple is actually happening in nature.
Bitch.
“Black Curraaaaant”
It’s a currant
And apparently they got unbanned from the last state to ban them (NY) in 2006!
@@TheSimon253 "The growing and importation of currants were banned in New York and other parts of the United States for more than half a century because they were thought to help spread a fungus that threatened the timber industry."
Fun fact about me, I was born super early so my eyes were under developed. I was classified legally blind at birth but through corrective lenses and surgery I can now see well with glasses and still poorly but well enough without them. I also have an issue with light brightness (if its bright out I cant see shit, if it's dark out I can see shit), and differentiating browns from each other (the only time this is usually in issue is with shows shot dimly, video games with a very brown color scale, or paintings with lots of brown). There are some shades of brown I literally cannot tell apart from one another.
Full achromat here. I actually did see a (slight) difference when you switched to the achromatopsia filter.
And yeah, I go outside with red-lensed sunglasses. I'd be completely noctural if society would let me get away with it.
Chris Check they will. It's called the "night shift"
I teach at a public high school, so at least in terms of my job, no, I can't be nocturnal. Most stores around me are also closed when it's dark.
Move up to teaching at a college, and night classes become a very real option.
Hey for what its worth, I read your reply, and when I got to the sunglasses part, my 13-year-old comic-loving self from the past screamed in my brain "JUST LIKE CYCLOPS!"
Coworkers have said that to me.
The second yellow looked different to me and I'm male *shrug*
Also, is this why my Mom thinks our house is blue and I see mint chip green?
yes
It was definitely slightly darker
probably not
@@colinf3963 He said that if you looked hard enough you might see a difference, even if your not a tecnhocromat
*"You're the first ever, a scientific miracle, congratulations!"*
So whats up with the purple snails in the Mediterranean sea thats shells where used in rich ppls clothing?
I was wondering the same thing lol
We don't mix man made paint to make purple, neither does nature
I had always wondered why there were no in-between answers for the dress, I saw it as a washed out blue and kindof a worn-brass color(brown, less specifically)
Later I watched a video of someone dissecting the image(as well as the shoe image), and revealed that the actual colors appearing on ones computer screen are indeed washed out blue and brown.
aight, im glad someone finally admits seeing another set than the 2 everyone else says.
I've only seen it as a pale blue with muddy gold. So basically the way you describe it. I would like to know what video that was though (I haven't seen it & have only happened across a couple of references to the blue/brown combo being seen at all.)
^ Same. I see it as pale blue and muddy gold.
I posted a large comment about this but basically if you see it as black and blue it's because you either knew it was black and blue to start with or you have a more intuitive sense of how light effects color.
The pixels are dim bluish white and dingy brown.
So if you see it as "white and gold" you're talking about the image that you're seeing. If you see it as "blue and black" your brain is at the very least doing a bit of gymnastics to reach a more correct answer.
Like he said it has nothing to do with your eyes. Everything to do with your brain.
“Purple is not a natural color. think about it, what in nature is purple?”
Wisteria. Pansies. Asterwoods. Eggplant. Amethyst coral fungus. A few other fungi. Purple lichens. Violet backed starlings. Guoldian finch. Jarcaranda trees.
yeah, I thought the whole thing was that there was no BLUE in nature
from what I can see on google those are all violet, not purple
2:05 Is that exurb1a?
Yep
yup
Yip
Yyp
uyp
Tritanopia boyo here.
Thank you for telling everyone that the world around me isn't some weird vapourwave cyberpunk cyan and magenta wonderland
Well boyo I hate to break it to you, but the world around you IS a weird vapourwave cyberpunk cyan and magenta wonderland. You just can't realise it. xD
Elizabeth Ling Who knows? Its normal to us so until a grizzled detective Harrison Ford pops into my life-- I'll just go, on life as usual!
But don't you wish your world was a weird vaporeave cyberpunk cyan and magenta wonderland
@@Dooge
yes :^(
YESSSS. tritanopia child here
With the "no purple in nature" example, my mind actually jumped immediately to flowers. there are some flowers that can be a very, very deep and distinct purple. How do you explain that? Moreover, how do you explain the brain's interpretation of there being purple at ll if there's no such thing?
In my opinion, purple is either just weird blue or weird red.
God, 7 year old me would be so offended by what I just said, I loved purple a lot back then
I think there's a particular opinion that violet and purple aren't the same thing, because purple (not referring to our perception of a color) isn't a light wavelength that can be reflected. Which is the only way you can really justify saying that... because violets are... well, violet. Which to normal people means they are purple. You essentially have to be in the camp that doesn't think a kajillion different colors exist in nature, because you classify them as degrees of already existing colors. So to those people, colors like 'lime green' or 'periwinkle' or 'burnt umber' or 'cerulean' don't exist in nature from a scientific perspective. And purple is in that same category as all of those color combinations that don't have their own light wavelength or something. I'm not an expert, and really bad at explaining so I would take this with a massive spoonful of salt and do your own research but yeah. That's basically how I understand that.
Dumbledoresarmy13 So orange doesn't technically exist either?
Active Advocate
I thought of amethyst.
IndoDINO TH-cam ultraviolet rays exist so amethyst is more a violet. It’s a crystal anyway too but I don’t know how the light makes it violet. If you look at uvlights you’ll notice a lot in nature is giving off that color than our standard rich purple. I believe our context for true purple has some more reds or blues to it.
1:28 I'd say it's a firmware issue rather than software issue, implying neurology rather than psychology. Great, interesting and informative video BTW!
15:10 Woah! It looks like we stumbled upon the same science articles given my video mentioning that particular subject. Cool!
Firmware is a type of software.
t, professional programmer
I'd say its more of a physical driver issue.
Hey uhh.. You've uhh.. You've got something on your chin there buddy.
ALOT more than that glows under uv light, Notably ketchup, canola oil, honey, and certain soaps.
Which are all "organic" substances.
i couldn't stop laughing when he did that
We all know his face is an organic substance, yeah?
also, semen isnt particularly UV reactive until they spray luminol on it.
@@Plant_Parenthood Oh fuck I read "organic" as "orgasmic" like 15 times before I got to this comment and realised.
The best part of this video was showing your ability to distinguish between "less" and "fewer".
I, unfortunately, have been slowing losing this ability ever since I started using the internet.
How's that going?
that moment when the split Yellow screen really shows 2 different colors xD
I just discovered this channel a couple of days ago; you are doing a really fantastic job, congratulations and thank you for your work and integrity! 6:20 FYI: "Currant" (Blackcurrant, redcurrant) is pronounced the same as current. (Electrical current, current affairs)
The actual dress is gold in the picture, if you use paint to pull out the sample colour it comes out as gold
People saw it as gold and white because it was lit terribly and the camera is bad.
My solution to that connundrum was to look at the pixels.
And they weren't dark blue and black. They were a dim bluish white and a dingy brown.
Honestly if you see that picture as a black and blue dress, it's because your mind is taking a second longer to process what you're looking at. Your brain is taking a second to correct for the image's terrible lighting.
And if you see it as white and gold you're not. You're looking at the pixels and not seeing any black at all. Your brain isn't factoring in the light the way some other people might. You might not recognized that the image is terribly lit, in which case your mind doesn't do the work to extrapolate what the actual colors might be.
The Image is white and gold (closer to a dim light blue and dingy brown as I said before), the dress is black and blue.
It certainly has nothing to do with your eyes.
Interesting idea, and probably right. I know I can see the full spectrum, never had any color blindness related troubles, but this dress is white and gold to me. There was one time when I saw it with a different light and suddenly I saw it as blue and black, but the original picture didn't leave any doubt when I first saw it.
Poorly lit photos don’t usually result in major color changes like that.
I’m convinced that they were in fact two different dresses. Only way I would know for certain that it’s different perceptions of the same photo, is if someone prints it off and I see it still as the white and gold, and someone looking at the photo that claims it is different is looking at the same photo.
This is why it’s hard to measure people’s perceptions. Because no two individuals perceive the world in the same way
@@starcrafsf7101 My family all looked at the same picture on my phone, I saw it white and gold and so did my sister but everyone else saw it blue and black.
@@saggybobby3733 yea i just pulled up the picture and had my brother look at it. so we were looking at the same exact image, and yet seeing two very different things. weird
I was sent to the principal's office in 3rd grade because I defended a friend who got into trouble for coloring a picture of our teacher, using a green crayola to color her hair. She thought it was an act of insurrection by a 9 yeat old Fidel Castro. And I played the part of Che Guevera. She didnt believe either of us. When I got home , crying and sure I was going to be disciplined, I had to explain my friends color blindness to my father. He listened to my sobs and my story. And patted my head with a smile and congratulated me for defending a friend. I believe that day my father grew 2 feet taller and became my hero. A call from my father to the school the next day and both me and my friend were given a very tepid, half assed apology by the teacher.
Brian Garrow Your teacher thought your friend idolized Fidel Castro, because she coloured her hair green?
Screw the rules! I have green hair!
vanishedspartan You should probably lay off the drugs.
It's a quote from Yugioh the Abridged series, and is relevant to the conversation since the character in question who says the quote is an egotistical git with tyrannical tendencies.
vanishedspartan For someone referencing the abridged series, I expected you to notice my reply was also a reference. Apparently I was mistaken, even though that quote comes in a few seconds after the part about green hair.
My eye doctor told me I had an unusually wide color spectrum when I was fifteen. The more I learn about people who can actually see outside the normal spectrum the more I am convinced I either wasn’t paying attention to what he actually told me or I was lied to. Probably the former. I am really good at identifying slight differences in color though.
Imagine how amazing would it be to turn on and off each cone of vision at will.
Since I had my injured lens removed and replaced with a implant everything is brighter and a little washed out in that eye. Kind of like how harsh fluorescent lighting can be.
Great video. You can also train your brain to come more aware of the real colors you're seeing. This is typically something artist learn, and become more hone over time. I've looked at the world very differently since getting an art degree. I see the world as hues, shades, tints, gradient, patterns, variations of light, etc.
"the more you know"
its pronounced black-current
Can’t get enough of that “black cur-RANT”
I have heard that you can get better at detecting differences in colors; another potential reason that spectrum test doesn't work. It has been years since I read whatever article that was, but it was pointing at graphic designers as people that tend to get better due to their need to put that skill to use.
+Cars Simplified That certainly seems plausible.
I know I'm late to the party but I did notice the line between the two yellows colors and did notice the that green as added before he mentioned it. Being male I'm positive I'm not tetrachromatic but I do do graphic design as a hobby. It seems my anecdote would support this being the case.
Metal Same here 🤔
Makes sense I am an artist of sorts and I had no trouble distinguishing between the two yellows.
I know I’m late to the party but as a guy who has fiddled with minor variations of color (mostly things like the difference between 0x888888 and 0xAAAAAA) I was able to distinguish the different yellows side by side. It definitely seems like practicing color differentiation helps improve your ability to perform color differentiation, the same way that practice improves any other activity.
Dude, black currants are _not_ illegal in the US. They were banned once upon a time, but were allowed back early in this century.
There's no federal law banning Black Currants since 1966, but many states have kept it illegal. It's partly or completely illegal in 11 states.
Why are they illegal? This all sounds pretty inhumane.
@@captainhoratiobungleiii7147 'Blackcurrants were once popular in the United States as well, but became less common in the 20th century after currant farming was banned in the early 1900s, when blackcurrants, as a vector of white pine blister rust, were considered a threat to the U.S. logging industry.'... Wikipedia 🤣
@@likantropb1948 thanks, that makes sense. Still very sad though 😥
Really enjoyed these two videos on vision. I not only learned something, but I laughed a lot, and in the middle of a depression. Thanks!
I am pentachromat. I see red, green, blue, bullshit, and disappointment in human race. XD
Aaaaand the Best Comment Award goes to Slav Tech
Thank you! Award may be sent to Kremlin office 17B.
on a role lmao
How edgy
lol, i'm actually a hexachromat #getshrekt
Him: think about it, is there anything in nature that is purple?
Me: lilac-
Him: you probably thought of grapes
Him: think about it, is there anything in nature that is purple?
Mia Forté
: lilac-
Him: you probably thought of grapes
Me: "Violet! You're turning Violet, Violet!"
(Cue the oompa loompas)
I thought the same thing eggplant but is it actually black? I don't think it's purple I think it's black
the funny thing is, he used a picture of an american grape (Muscadinia or Vitis rotundifolia). there are european grape (Vitis vinifera) varieties that are much more convincingly purple
Me: Amethyst!
@@hula691 The purple eggplants arent natural.
I could spot the difference between the two yellows. It's interesting except for what you mentioned just before that about that we can't do any online test to know because it's all pixels.
For the dress, I first said it was black and blue, but after a bunch of arguing over it, I sat and considered to intentionally look at it as white and gold and I could see it. I think it's more of a mental perspective shift because of the lighting. I could see it as both.
As a colour blind women I feel slightly hurt!! 😂 my mother is a carrier, so I received one copy from her. As for the other one my father says he isn’t colour blind, so I’m not sure if he is colour deficient and doesn’t necessarily realize or if I really got a bad deal from the luck of the genetic draw! 😵 I find that to be REALLY unlikely though.
Yeah he kind of messed that up. Women can be colorblind too. It's on the x chromosome and is a recessive gene, so if you have two x chromosomes (i.e. are a woman) then you need both of them to have it, which is rarer than just having one x chromosome that has it.
He either doesn’t realize he’s colorblind or your mom cheated. Unfortunately, it’s one or the other. I recommend you give your dad a colorblind test and if he passes with flying colors your mom is going to have some explaining to do.
Woah woah woah blackcurrant is illegal in the US? What??
For local cultivation. Imported foodstuffs like jam is allowed, though blackberry is vastly more common here.
Joe MacDougall Can you tell us what it tastes like?
was until 2003
SeventeenBall just like describing some grapes
Yes, or at least it was for long enough that the flavour is foreign and alien to Americans. That's why Americans have grape flavoured things where in the rest of the world, it would be blackcurrant.
Really enjoyed this one. It's interesting how people can take in color in so many ways.
The “purple party filter” is actually a secondary emision line of the UV phosphor used in black lights. Over 90% of the light emitted actually falls in the UVA spectrum. It’s ultraviolet in the sense that its too short of a wavelength to see, but too long to be ionizing.
I've never been able to get a good answer about my eyes, not even from an optometrist. When it's really sunny outside, everything looks blueish/violet gray out of my right eye, but vividly colorful out of my left eye. I have a slight astigmatism, my left eye is -0.25(nearsighted) and my right eye is +0.50(farsighted). I've always wondered if it's because the different shapes are stretching the wavelength of light so that I'm being blinded by ultraviolet in my right eye. One sees really well far away and the other up close, so I have 20/16, but it gives me headaches by the end of the because one is always struggling to focus.
Nope. That isn’t how that works. The cornea absorbs UV C and the lens absorbs UV B. (The retina absorbs UV A which is why you still should avoid looking directly at the sun or arc weld with the right mask.) Those would be blocked from hitting the light-sensitive retina evenly between your eyes regardless of nearsightedness/farsightedness. If you are concerned about the difference in colors between your eyes in certain lighting conditions, it is most likely due to a defect in the lens (aka a cataract) which may scatter certain wavelengths unevenly, or a defect in optic nerve due to some type of damage which may have occurred along time ago. Also, if you are having trouble with headaches/eye strain at the end of the day, start by wearing your glasses or contacts the whole day (that you are awake) for a week or two. If it doesn’t help, you probably have an eye muscle issue that can usually be help with vision therapy, which is similar to physical therapy but for your eyes. Also, because it is a pet peeve, having astigmatism is basically insignificant in almost every case and really truly is not bad nor does it make you special.
Some people do have different color perception between their eyes. Perhaps you have something else going on like being a chimera where the cells in one eye are genetically different than the other eye. It's rare, but it happens. An opthalmologist (eye doctor/surgeon) might be able to answer your questions.
"I've always wondered if it's because the different shapes are stretching the wavelength of light" well clearly you have no idea what you're talking about. we know that for sure
@@ockertoustesizem1234 That's usually why people use the word "wonder", but thanks for being a dick about it.
artschool and painting or anything involving dealing with colors short of trains your eye to tell the colors apart easier
Too funny - while you're talking, behind your shoulder, Mona is still smiling at me.
Onions are purple.
Also I've only ever seen that dress as white and gold. It's just an optical illusion, my dude. You're not wrong for seeing it a different way than somebody else.
Eggplants aren't they purple. Also what onion is purple there is a red onion
That dress illusion messed me up. First I saw it as white and gold then I blinked a lot and the colours changed.
The overexposed image looks like it is white and gold. Maybe a bluish white and gold. The "don't be an eye-witness" line is completely uncalled for.
Eggplant is purple, and so are many many different flowers.
Panzer Man I've only seen it as black and blue.
At one time I ran a number of vision tests at work and noticed that about 1/4 of the men had issues with the "what do you see" tests. Stuff that just leaped out to me had them scowling and staring, and eventually reaching out with a finger to trace the correct shape. They could see it, but it was difficult. They also had issues with differentiating similar colors from each other.
It was then that I realized that a lot of my arguments with people over the years about what color something was was "we're both right."
I have a friend that is color blind and just recently found out from him that there is more than one type of color blindness. I had no idea about that. This really helped educate me. Thank you! I have another friend with a color blind son and they recently got those glasses for him. It was a very emotional experience for the whole family when he saw the world in "full color" for the first time.
Wait, what's this recently found colorblindness? I'm just *curious* 🧐 . Does it have a name or could you explain it a bit further?
There are a few variations with some sub-variation. A Google search provided me with protanomaly, protanopia, tritanomaly, tritanopia and monochromacy.
@@Skyluzz there isn't a recently found color blindness. they just said that they had recently learned about the various forms of color vision deficiency
10:57. UV light. WHAT IS THAT WHITE STUFF ON THE LEFT SIDE OF YOUR FACE?!?!?!?! 😱😱😱😱 I’m totally kidding! I am red/green colorblind and I found this video very informative. Thank you!!!!
"is this purple?"
"yes."
"What the fu-"
this video coninced me that i am a deutersomething and a male tetrachromatologist
lmao! same xD
Yes, well you most likely aren't a tetrachromat. Likely there isn't even a single male in the world that has tetrachromacy
@@tristanlj3409 Well I know a guy who can see all kinds of colors inside of colors that the rest of us see as one shade only. He said he was tetrachromatic and I have no reason to doubt him.
@@TwiztedHumor you know a guy who's good at making shit up to make himself look cool
I always knew that I could distinguish between subtle shades of colors. I also read that if you saw white and gold or blue and black, it was because of the screen you were looking through. From your examples I believe I'm a tetrachromat and I'm a female. I've had men in my life that, I don't believe they were color blind, didn't see colors the same as me. I chocked it up to male and a lack of interest.
@Sigma Chad It's not an illness. I was an art student when I was younger and always saw the subtle differences in subtle shades of color. I continued seeing the differences and never thought anything of it. I still don't since my close vision has deteriorated with age. Hopefully, I will be able to afford a new pair of glasses next year because it's hard to see clearly when your vision is blurry.
@@katheymann2334never argue with anyone that has "sigma", "alpha", "chad" or anything like that in their names
I read at one point that a good number of bird species do have a fourth cone and can see somewhat past the wavelength we call violet, although some birds see farther into the ultraviolet range than others. Apparently some birds that look drab to us (and to most predators) actually look vibrant to potential mates because some of their feathers reflect ultraviolet. I read something like that about bees and certain ultraviolet-colored flowers as well.
It's been long enough since I looked into it that I'm taking even my own words with a grain of salt, but it does seem like there are animals out there that get more use out of being tetrachromats, because their fourth cone isn't as redundant as a human's yellow cone!
4:24 I can see a 2 and I can see green like any other human...
Yeah, after twenty minutes of random online tests, I can say that I'm not colourblind at all, but I can see the two.
... I saw an 8.
I don't even know.
Bottle o' Bleach Same here!
What you're seeing is a cascade of errors. First, the test card he's showing probably isn't an actual card from an Ishahara color test set, but one printed on a computer printer with its inaccurate inks. This was then photographed with his camera, which has inaccurate color filters on its sensor, in a room lit by lights that are probably not continuous spectrum lights. Then it got h.264 encoded to be put online, which limits the colors. Then you watched it on your computer monitor, with its inaccurate color filters, backlit by either LEDs or cold-cathode fluorescent tubes that have their own spectrum deficiencies, in a room also lit by non-continuous-spectrum light sources. It's almost a miracle that ANYBODY sees the correct pattern. And by the way, NO online test can accurately diagnose color deficiencies, for the reasons already given.
BrightBlueJim OK, thank you.
14:53 What about intersex males, with Klinefelter syndrome that makes males have 2 or more X chromosomes? Could they be tetrachromats?
Don't know but even if it was, what are the chances?
The chances of having both klinefelter syndrome and tetrachromacy are obviously tiny, but in theory, yes.
That’s not intersex though all people with Klinefelter syndrome are all males
I would say yes, but then all of sudden half the TH-cam comments will be people claiming that they are XXY and tetrochromats just to feel special
Oh, and they're autistic too, so that means you can't question anything they say, and they're actually way more creative and profound than you.
The UV thing sounds extremely awesome omfg
That, however, is not true UV vision, according to scientists, it's still nothing like a bird or a female human who is a true tetrachromat.
BEST EPISODE EVER! Loved it.
4:27 You can see the 2 even if you have "normal" color vision. The gray(?) dots kinda stand out and the only number they can form is a 2.
Good Because I saw a 2 lol
Merlot grapes are extremely purple sir! Many red bordeaxs as well. Also, violets are pretty purple. I also had one hell of a purple hibiscus on my fence at the old house!
The way you said blackcurrant was adorably American. I both love and hate how Brits and Yanks can't read our own language when the other uses it. Blackcurrant is spoken as "blak ku-rnt." Basically, black is black, and currant is actually current, as in 'water current.'
On a lighter note, I'm sorry you don't have any blackcurrant. It's really nice, and great in Ribena.
@Jeremy Shuler It's a brand of drink we call "Squash", a type of flavoured syrup you mix with water, and Ribena is like the best one, better than Kool Aid
Canadian currently living in the US. I have found places in the US that sell Ribena but it's clearly not even close to as popular back home. Drinking some right now. Don't think I've consumed blackcurrant in any other form.
I have black currant deodorant
Black kernt
What about XXY syndrome people though, could they have 4 cones?
Also, I believe the phenomenon of seeing white and gold is called Color Constancy.
the y chromosome does not code for cones and it could be said that the people who thought that the dress was white and gold had malfunctioning color constancy because they weren't able to see the actual colors
I've been going back to watch your videos, as I await for new stuff, and the first time you showed the dress I saw white and gold. After you explained things, I went back to look at the dress again and I saw black and blue. I would be a terrible witness.
I'm pretty sure there's a kind of Mediterranean sea slug or snail or something which makes a purple substance that gets turned into a purple dye (Tyranian purple or something like that?). And, of course, iridescence often creates purple hues. But aside from that...yeah, the closest I can think of are some deep reds.
About damn time. And as always, amazing video! And as for Wheatley, of course he would be British. What else would he be? :)
I think all talking TV animals are required to be British. I often wonder, when I'm not watching TV, but it's on in the background, why the Geico gecko is talking about TripAdvisor.
Thank you for explaining this, I was so confused because of all the misinformation on this topic. Now I understand everything.
"or i guess you're the first ever, a scientific miracle, congratulations!"
nope, just trans lol
As a brit your pronunciation of black currants is painful. Also wouldn't a natural purple be foxglove?
im american and it still bothers me how he says it. lol
I immediatly thought eggplant
Wyatt Ezekiel
Really? I thought of Orchids.
Foxglove is poisonous.
I thought of lavender.
All the "at home tests" that test for "tetrachromats" are accomplished by anyone with regular color vision who have careers concerned with colors. Artists, interior designers, painters ect. Most color differentiation seems to come from practice more than anything.
What if I saw the dress as all four colors simultaneously? Should I just go outside?
I see it as a dark yellow, like a darkened out gold with bluish white lol
I have always had an uncanny ability to differentiate between similar colors. It's honestly more of an annoyance than anything. People wear clothes that are close enough to pass but the slightest difference in color drives me mad.
I totally had to pause this at 11:45 and come back to it later bc I felt that seizure feeling I outgrew at 12 (if you had or have seizures you know what I mean) Great video though!!! You should definitely do a video on how colors can bring on epileptic seizures.
4:23 it does not look normal to me and I see a two
I am female
no I’m not colorblind
same
I'm guessing it's an error on his part. Perhaps he meant to say if you CAN'T see the number 2, then you're colourblind.
I think he meant if the picture looks normal AND you see the 2
same.
I'm male but not colourblind and saw most of it
4:27 Well, I can see the two, but the color change you made looks weird as heck...