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wynntari t1_j9crmu0 wrote

I think it would be reasonable to group colours by the categories a language uses to group them.

English, for example, has categories like "red, orange, yellow, green, blue, purple, pink, white, grey, black"

Colours would fall into one of these categories and two different colours that fall into the same category would be considered "the same colour" for the purpose of this discussion.

There will always be colours in-between categories that are hard to categorize.

What wavelengths can bioluminescence produce?
And which combinations of wavelengths can be produced together by biological processes?

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Hapankaali t1_j9e8hpm wrote

Those categories are not unambiguous either.

Bioluminescence produces light at all wavelengths of the visible spectrum.

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