When did humans evolve to have blue eyes and blond hair?

That is problematic and you will find a variety of opinions all bolstered by “data.” The current evidence suggests that in Europe, light colored eyes appeared at least 7000 years ago. read more

Thanks for A2A FRed I don't know if evolve is the right word, but the first person to have blue eyes dates back about 6,000 years. Previous to that first person no one had blue eyes. read more

The trouble with this theory is that there is no evidence, from the scraps of Neanderthal DNA that have been recovered from bones, that there was any substantial interbreeding between them and Homo sapiens at all. Perhaps the most plausible theory is that blonde hair and blue eyes arose because of a mechanism called sex selection. read more

This is a good question and an active area of research for scientists studying human evolution. I should first point out that blonde hair and blue eyes are prevalent only in certain parts of Europe - northern France, northern Germany and Scandinavia (Denmark, Norway, Sweden, etc.), primarily. read more