Color Management Part 4: Maxwell's Spinning Discs 3
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John Custodio

With regard to the green problem, you haven’t explained why the subtractive primaries of paint are called red, blue and yellow, but dyes in color film (subtractive) and pigments in inkjet ink and color printing like offset (also subtractive) are called cyan, magenta and yellow. Could it be that in the traditional names of paint, the term blue is a misnomer for cyan, and red is a misnomer for magenta, with yellow being the correct term?

Jose Spena

I think Cyan & Magenta are not exact the same hue as Blue and Red. If you see, mixing magenta with yellow you get red, and Cyan it is slightly more light than Blue.

This is not something I have investigate, it is my own experimentation during my graphic design career and daily practice.

John Custodio

In the video: “The green problem solved, mixing light is additive color mixing, mixing paint is subtractive color mixing.” So the additive primaries are red, green and blue. And the subtractive primaries are red, yellow and blue. How can red and blue be both an additive and subtractive primary? And what’s the deal with cyan and magenta? (Cyan being the additive mix of blue and green; and magenta being the additive mix of blue and red.)

David Hover

This is a brilliant series! Thanks!

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