What color are the eyes of the Han people?

Black or brown. The eye color of Han people is usually black or brown, which is mainly determined by the iris color in the eyes. Iris is a thin film in the eye, which contains many kinds of pigment cells, and the pigment content in these pigment cells determines the color of iris. In the Han population, the pigment cells in the iris contain more melanin, so the color is black or brown.