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Human color perception is three-ish-dimensional I think would be more accurate. There are no three colors that can be mixed to produce the whole gamut of color
by andrewla 6y ago
Human color perception is three-ish-dimensional I think would be more accurate.
There are no three colors that can be mixed to produce the whole gamut of colors that humans can perceive. That is, there are shades that are visibly distinct that can not be produced by the closest pigments we have to primary cyan/magenta/yellow, and similar cannot be produced by mixing of monochromatic light.
Our perception is a window into the infinite dimensional space of frequency/intensity that can be very well-described by three parameters, but that is not adequate to completely describe colors even as perceived by humans.
- sudosysgen 6y agoWhile you cannot produce all colours humans can perceive using a mix of monochromatic light (indeed, some perceivable colours are entirely impossible to be perceived without afterimages), the colourspace of human colour perception is entirely three-dimensional. This is, fundamentally, because we have three types of receptors. Pigment maps into our perception of colour are possible in theory, but it is impossible to make an ideal pigment in practice nor an ideal substrate, which is why you see the issues you do when trying to produce them in practice.
- 6gvONxR4sf7o 6y agoNot only that, some people have four receptors.