But now I think there are not undiscovered colors. Maybe shades. Maybe there’s ultraviolet light and things like that we can’t see. Maybe our eyes can only comprehend certain colors. That must be it.
Because I look at a rainbow and all known colors are there
Our eyes can only see colors in what’s called “the visible spectrum”, there are colours we can’t see in the Ultraviolet and infrared part of the spectrum.
ROY G BIV is a way to remember the colours we can see and their order in the visible spectrum. If you look at that rainbow the colours are in this order.