I always learned “ROYGBIV” as the colors of the rainbow. Red, orange, yellow, blue, indigo, violet.

What’s up with the last two? Isn’t indigo basically just dark blue? Why is it violet and not purple? Can’t it just be “ROYGBP”?

  • Buddahriffic@lemmy.world
    2·
    1 year ago

    There’s a similar lack of distinction between Green/Blue in the ancient world.

    How would that arise? There’s blues in the sky that are very distinct from the greens of plants. Or are the blue detecting rods (or is it the cones that detect colour?) that new that we can perceive blue more than they could in early recorded history?

    • Fisk400@lemmy.world
      7·
      1 year ago

      You know how some people can tell you the exact shade of two colors that you consider identical? Turns out that giving colors distinct names in our mind makes us way better at seeing the difference and that is how we chop up the color spectrum from an infinite number of colors to seven. You think blue is completely different because you went to school and being able to tell the difference between blue and green was a requirement for you. If the school told you that the sky is a light shade of green and the forest is a dark shade of green you would adjust your brain accordingly.

      I guess my point is that all colors are made up by the state and we indoctrinate our children into the government sanctioned system at an early age.

    • protist@mander.xyz
      2·
      1 year ago

      There’s a great Radiolab about this, highly recommend a listen.

      MAY 21, 2012

      Why Isn’t the Sky Blue?

      What is the color of honey, and “faces pale with fear”? If you’re Homer–one of the most influential poets in human history–that color is green. And the sea is “wine-dark,” just like oxen…though sheep are violet. Which all sounds…well, really off. Producer Tim Howard introduces us to linguist Guy Deutscher, and the story of William Gladstone (a British Prime Minister back in the 1800s, and a huge Homer-ophile). Gladstone conducted an exhaustive study of every color reference in The Odyssey and The Iliad. And he found something startling: No blue! Tim pays a visit to the New York Public Library, where a book of German philosophy from the late 19th Century helps reveal a pattern: across all cultures, words for colors appear in stages. And blue always comes last. Jules Davidoff, professor of neuropsychology at the University of London, helps us make sense of the way different people see different colors in the same place. Then Guy Deutscher tells us how he experimented on his daughter Alma when she was just starting to learn the colors of the world around, and above, her.

      Bonus: The Colors episode