• CaptainLemmit@feddit.it
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    1 year ago

    I can confirm that I see both an orange car and a 21. I’m not colourblind in the "I can’t see any colour " way and I can drive a car and see traffic lights without any problem but I do percieve colors differently enough to get in arguments with friends and family about the colour of stuff. I think it’s called deuteranomaly

    Edit :the more I know!

    • Andi@feddit.uk
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      1 year ago

      Colourblind isn’t the complete absense of colour, e.g. everything looks black and white. With deuteranomaly, you are the actual textbook definition of colourblindness… There are different levels of it, but all can still perceive colour - it’s just whether the difference in colour of the spectrum is detected correctly.

      Deuteranomaly (/ie) is the reduction in reactivity of the red-colour receptors. That means your perception of orange/red/brown is less than those with normal vision.

      For those with normal vision, this is a great chart. But, if you’re colourblind, it’ll be more confusing for you, sorry!

        • FierroGamer@sh.itjust.works
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          1 year ago

          If I were to guess, it might be because purple isn’t a wavelength of light, it’s like a glitch in how we perceive light with the two cones opposite to each other in the spectrum being stimulated at the same time without the middle one.

          For any practical purposes in every day life, purple is a color, it just doesn’t exist outside our perception.

          • MystikIncarnate@lemmy.ca
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            1 year ago

            I’ve actually gone really deep on this and the graph they’re shows the mechanism at work. “Purple” strictly doesn’t exist, you’re right, but also wrong. Violet activates essentially the same receptors, “blue cones” in the retina are mainly only sensitive to blue/violet, but if you look at it, the “red cones” actually have an uptick at the extreme of blue (into violet), so when just blue is activated, we see blue, but when we see red+blue, we see it as violet/purple, because if our eyes were seeing actual violet, that’s what would be activated.

            Purple as red+blue, doesn’t exist, it’s literally a hack to trick our brain into thinking it’s seeing Violet, when it is not.

            EDIT: this is a far better explanation than anything I could come up with, and demonstrates the phenomenon. https://jakubmarian.com/difference-between-violet-and-purple/

        • cs127@lemmy.sdf.org
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          1 year ago

          the chart only shows colours in the visible spectrum, which does not include colours that mostly only stimulate the long and short cone cells, such as purple, magenta, and pink

      • PeleSpirit@lemmy.world
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        1 year ago

        So everyone can see a form of blue, most being royal blue? That’s super interesting because there’s a saying in art, “If you can’t make it good, make it blue.”

    • zefiax@lemmy.world
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      1 year ago

      You are actually textbook definition of colour blind. What you have is deuteranomaly which is red green colour blindness.

      • Cyrus Draegur@lemm.ee
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        1 year ago

        Even though I know the dress factually is blue and black, I think a white and gold version should be made, because it’s pretty.

        And it should also be photographed in such a way that it appears to be blue and black.

      • Poiar@sh.itjust.works
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        1 year ago

        Night owls tended to see the dress correctly.

        It has something to do with how good people are at looking at visual keys in the picture to determine the color.

        All colors are pervieved relatively. Vsauce on YouTube has a good video on this