Why can't the majority of people distinguish between indigo and

Why are indigo and violet colors of the rainbow but not purple? - Quora

Why was ROY G BIV (Red Orange Yellow Green Blue Indigo Violet) chosen as the color scale? There are so many shades in between (and before and after), plus it seems like

Why is indigo a distinct color but pink is not? - Quora

Wavelengths and Colors of the Visible Spectrum

What's the difference between violet, indigo, and purple? - Quora

What is a side-by-side comparison of purple and violet? - Quora

What's the difference between violet, indigo, and purple? - Quora

Hummingbirds see colors we can't even imagine

What is the difference between lilac and violet? - Quora

What Is Indigo and Why Is It in the Color Wheel?

Why are indigo and violet colors of the rainbow but not purple

What's the difference between violet, indigo, and purple? - Quora

Why can't the majority of people distinguish between indigo and blue or violet? What does it mean, if anything, when a person can? - Quora