The science of color is full of surprises and the first is that seeing color is something that happens in your brain. The signals that lead to color vision come from your eyes but it is your brain that makes sense of them – allowing you to see a strawberry as red and the sky as blue. Your eyes create the code for color, as we will find out below, but those coded signals only make sense after your "visual cortex" (the part of your brain at the back of your head that deals with seeing) decodes them. Lots of different parts of visual vortex must work together for you to see color properly, and they will be the subject of a whole other paper.
But perhaps the most surprising thing about color is this: although you can see millions of different colors (all the colors of the rainbow, plus every possible mixture of those colors), you have only three types of color detectors in your eyes.

License information: CC BY 4.0
MPAA: G
Go to source: https://kids.frontiersin.org/article/10.3389/frym.2013.00010