Why Do Blue and Green look Similar While Red Looks Radically Different, In Spite Of Color Spectra?

Question

I’ve noticed throughout my life that red looks very different from green and blue, but when you look at spectral diagrams, red and green are very similar colors, while blue is quite distinct. Why does red look so unique in spite of the fact that it is similar to green and blue ought to be the one that looks very different?

In: Biology

Answer 1

Blue and green are closer to each other on the visible light spectrum. Blue and green are about 450 and 550 respectively while red is about 750.