Why is the human eye colour generally Brown, Blue and other similar variations. Why no bright green, purple, black or orange?

Question

Why is the human eye colour generally Brown, Blue and other similar variations. Why no bright green, purple, black or orange?

In: Biology

Answer 1

Actually ELY5: Color is what you see when light reflects off a surface. The melanin in your eye is the ‘surface’ light bounces from when you see eye color. Human eye melanin can’t reflect colors like bright green, black, or orange; only colors like brown, blue, grey, and the green we see.