"Primary" is not a cultural designation. Cyan, Magenta, and Yellow are the subtractive primaries which correspond exactly to the Red, Green, and Blue additive p

"Primary" is not a cultural designation. Cyan, Magenta, and Yellow are the subtractive primaries which correspond exactly to the Red, Green, and Blue additive primaries. This isn't culture. It's science. And CIE colorimetry works, but I can tell you from experience, it does not work "very well". Rather it is adequate given the DeltaE tolerance of any given project. That is why the world is moving to spectrographic models, and there are already alternatives in the works which stand to replace CIE/LAB/XYZ, for precisely the reason that they have proved inadequate to the task of modern color management.