my reasoning: the actual colors we can see -> the wavelengths that we can extrapolate to -> basically extrapolated wavelengths plus an ‘unpure-ness’ factor -> not even real wavelengths (ok well king blue and maybe lavender if I’m being generous could be)
Imagine taking about colors without the technique by which they are produced.
Also, did you just call black a real color when you are talking about wavelengths?
The problem with your statement is (not) fully understanding how our brains work at interpreting colors.
You mentioned yellow in this thread - our brains (not our eyes) see two different colors that they device to interpret as yellow, which is different to seeking a true yellow wavelength.
More of an everyday example of that is “white” (found under your mental illnesses) - you can buy cheap light bulbs that cover a smaller fraction of the light spectrum or better ones with high CRI numbers (“photographers lights”). I recently installed them in my parents house & they are amazed.
The other thing is we never ever see just one exact wavelength in nature, we have to mix and interpret all of them in other to make quick decisions & survive.
Evolutionary in our own line the red ones was the last addition, presumably to pick the red fruit quicker.
Also when you mention monitors (that emit light), they do all kinds of fuckery like pixel dithering where you mix two “colors” shown by the same subpixel (or two) but in a rapid succession.