We know color perception is a very distinct phenomena from the actual frequencies (and mixes of frequencies) of photons from which we perceive color. So it may

We know color perception is a very distinct phenomena from the actual frequencies (and mixes of frequencies) of photons from which we perceive color. So it may be that without a lot of examples of violet in everyday life, that not only human languages, but also our internal perception, may not developmentally adapt to strongly perceive violet. There would then naturally be a strong reinforcement of violet perceptual blindness, until the scientists’ systematic analysis of color forced greater exposure (in variation and number of incidents) to violet into generating significant perception of violet.