• @jqubed@lemmy.world
    link
    fedilink
    407 months ago

    The color people will tell you that cyan and magenta do not equal red and blue. My university advisor tricked me into taking a 400 level class from the college of art and design on color theory. Really interesting class but an insane amount of work. Very early on the professor told us to throw out any book that identified red, yellow, and blue as the primary colors. It’s red, green, blue for light or cyan, magenta, yellow for pigment.

    • Sternhammer
      link
      fedilink
      English
      217 months ago

      Yes, additive colour theory is based on red, green and blue (RGB). These are the colours you see if you look at your TV screen very closely.

      Subtractive colour theory uses cyan, magenta and yellow. In printing black, abbreviated ‘K’, is added for contrast—CMYK. These are the inks used to print the dots you see if you look closely at a magazine photo.

      I think people are confused by this because they’re taught a bastardised version of subtractive colour theory, using red, blue and yellow, at a very early age.

    • @rebelsimile@sh.itjust.works
      link
      fedilink
      37 months ago

      Red/yellow/blue are the primary colors for paints (as distinct from dyes/pigments, that’s CMY(k) and as distinct from light, that’s RGB).

      • @owenfromcanada@lemmy.world
        link
        fedilink
        English
        47 months ago

        Why would paints have a different primary palette than dyes or pigments? They’re all subtractive, so the primary colors are CMY.

        The red/yellow/blue is a lie!

          • @owenfromcanada@lemmy.world
            link
            fedilink
            English
            47 months ago

            I’m saying that, with respect to color reproduction, paints work exactly the same as dyes and pigments. You can’t make magenta paint from red, blue, and yellow. So the “primary colors” of paint are actually CMY.