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You're talking about light mixing. The red/blue/yellow color wheel is based on pigment mixing: green + blue = cyan, red + blue = magenta

by dazmax 11y ago

pluma 11y ago
And blue + yellow = green. So cyan = blue + blue + yellow?
- err4nt 11y ago
  If (cyan + magenta) + yellow = green, how would (cyan + magenta) + (cyan + magenta) + yellow = just cyan? To get cyan you simply remove the magenta from blue!
  - pluma 11y ago
    But there isn't a word for cyan and magenta, hence the need to define cyan in terms of RYB. cyan = blue + green green = blue + yellow cyan = blue + (blue + yellow) Well, technically: 2 parts cyan = 1 part blue + 1 part green 2 parts green = 1 part blue + 1 part yellow 2 parts cyan = 1 part blue + 1 part (1 part blue + 1 part yellow) i.e. 2 parts cyan = 1 part blue + 1/2 part blue + 1/2 part yellow i.e. 4 parts cyan = 3 parts blue + 1 part yellow But I think the real lesson here is that colour names based on additive colour mixing are silly.
koonsolo 11y ago
The original reply is actually correct. From Wikipedia: "For a subtractive combination of colors, as in mixing of pigments or dyes, such as in printing, the primaries normally used are magenta, yellow, and cyan,[1] though the set of red, yellow, and blue is popular among artists." I also learned the RYB colors as primary colors, and find it much easier to reason about than CMY. That's probably also the reason why artists use it. For the 'simple' language, I agree that RYB + white and black are enough.
err4nt 11y ago
Does your printer print with light? I'm able to print out a full rainbow from my printer and it uses Cyan, Magenta, and Yellow, with Black for added punch and printing text. What's inside your printer?
- icebraining 11y ago
  What does it matter what your printer uses?
  - rspeer 11y ago
    That's the only reason we're talking about CMYK, isn't it? The CMYK color space isn't a law of the universe, it's a printing technology.

You're talking about light mixing. The red/blue/yellow color wheel is based on pigment mixing: green + blue = cyan, red + blue = magenta

by dazmax 11y ago

You're talking about light mixing. The red/blue/yellow color wheel is based on pigment mixing: green + blue = cyan, red + blue = magenta

pluma 11y ago

And blue + yellow = green. So cyan = blue + blue + yellow?

err4nt 11y ago
If (cyan + magenta) + yellow = green, how would (cyan + magenta) + (cyan + magenta) + yellow = just cyan? To get cyan you simply remove the magenta from blue!
- pluma 11y ago
  But there isn't a word for cyan and magenta, hence the need to define cyan in terms of RYB. cyan = blue + green green = blue + yellow cyan = blue + (blue + yellow) Well, technically: 2 parts cyan = 1 part blue + 1 part green 2 parts green = 1 part blue + 1 part yellow 2 parts cyan = 1 part blue + 1 part (1 part blue + 1 part yellow) i.e. 2 parts cyan = 1 part blue + 1/2 part blue + 1/2 part yellow i.e. 4 parts cyan = 3 parts blue + 1 part yellow But I think the real lesson here is that colour names based on additive colour mixing are silly.

koonsolo 11y ago

The original reply is actually correct. From Wikipedia: "For a subtractive combination of colors, as in mixing of pigments or dyes, such as in printing, the primaries normally used are magenta, yellow, and cyan,[1] though the set of red, yellow, and blue is popular among artists." I also learned the RYB colors as primary colors, and find it much easier to reason about than CMY. That's probably also the reason why artists use it. For the 'simple' language, I agree that RYB + white and black are enough.

err4nt 11y ago

Does your printer print with light? I'm able to print out a full rainbow from my printer and it uses Cyan, Magenta, and Yellow, with Black for added punch and printing text. What's inside your printer?

icebraining 11y ago
What does it matter what your printer uses?
- rspeer 11y ago
  That's the only reason we're talking about CMYK, isn't it? The CMYK color space isn't a law of the universe, it's a printing technology.