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

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

What tertiary color is the most closely representative of indigo? - Quora

What is the difference between lilac and violet? - Quora

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

What are the opposites of colors such as yellow and blue like how white is the opposite of black? - Quora

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

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If indigo is between blue and violet in the spectrum, why does it sometimes appear like greenish-blue/turquoise to my eye? Is it a perception effect or something unique about this wavelength?