4 ms·
Red and blue are not ”the furthest apart”. Red and cyan, or blue and yellow, are complementary (180° separated on the color wheel). But color perception is more
by Sharlin 7y ago
Red and blue are not ”the furthest apart”. Red and cyan, or blue and yellow, are complementary (180° separated on the color wheel). But color perception is more complicated than that.
I believe something like orangish red and bluish green are distinct enough to most people with a red-green deficiency (including myself). The difference in ”blue content” makes them distinguishable.
- rocqua 7y agoThe actual wave-lengths are the furthest apart. Whilst that is not perceptually relevant, it is relevant to what happens when color-receptors fail. That is, as long as you have two different color receptors that respond differently to different wave-lengths, those will receive different signals from red and blue light.
- Sharlin 7y agoThe wavelengths that are furthest apart are red and violet. Which perceptually are close together, for red-green blind as well. But what does matter is picking the colors based on the corresponding receptors' peak sensitivity. The L receptors are most sensitive to red, and the S receptors to blue, so in that sense you're right. (Red-green blind or weak people lack the M receptors of have anomalous versions, respectively.)