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It would be helpful if he used Cyan for Turquoise and Magenta for Pink, since those are the accepted terms when speaking of color primaries. Also, there is a d

by teilo 17y ago

It would be helpful if he used Cyan for Turquoise and Magenta for Pink, since those are the accepted terms when speaking of color primaries. Also, there is a difference between how one sees color and how well one is able to distinguish one color from another. The CIE color model was based upon, if memory serves, testing done on 25 white french males, about the worst possible test group so far as color acuity is concerned. They should have chosen asian women, who have the highest color acuity as a population, that is, the ability to distinguish shades from one another.

jacobolus 17y ago
Since “primary” is a cultural rather than perceptual designation, and since both the particular colors chosen to express his ideas (that is, infinitely many choices of purples could be made which would still be extra-spectral), and the labels he uses, are arbitrary, I don’t see how it matters. What does this mean? Color is a perceptual quality, not a physical one, so the ability to distinguish colors is intimately tied to their definition. Since most people have fairly similar cone spectral responses, basing the model on an Asian woman instead of a French man wouldn’t really change it much. If using CIE colorimetry didn’t work pretty well, we wouldn’t still be using it all these decades later.
- teilo 17y ago
  "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.

by teilo 17y ago

jacobolus 17y ago

Since “primary” is a cultural rather than perceptual designation, and since both the particular colors chosen to express his ideas (that is, infinitely many choices of purples could be made which would still be extra-spectral), and the labels he uses, are arbitrary, I don’t see how it matters. What does this mean? Color is a perceptual quality, not a physical one, so the ability to distinguish colors is intimately tied to their definition. Since most people have fairly similar cone spectral responses, basing the model on an Asian woman instead of a French man wouldn’t really change it much. If using CIE colorimetry didn’t work pretty well, we wouldn’t still be using it all these decades later.

teilo 17y ago
"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.