Hazel eyes are due to a combination of Rayleigh scattering and a moderate amount of melanin in the iris’ anterior border layer. Hazel eyes often appear to shift in color from a brown to a green. Although hazel mostly consists of brown and green, the dominant color in the eye can either be brown/gold or green. This is why hazel eyes can be mistaken as amber and vice versa.
Central heterochromia is when the inner ring of the iris — the eye color closest to your pupil — is a different color than the outer ring, along the edge of your iris. This trait usually involves both eyes, with two separate colors appearing in each eye instead of one.
