Hazel is a light yellowish-brown golden color that's very similar to the color of a hazelnut, but hazel eyes often appear to switch between green and brown. The most prominent colors needed to make hazel are green and brown, and either color can be dominant, resulting in an amber appearance.
In addition to causing an amber tint, the blend of brown and green colors can also create an iris that has multiple color shades. Often varying shades of brown or green can be observed on the inner and outer areas of the pupil, particularly in sunlight.
Hazel eyes are most commonly found in Caucasian people, especially in areas where people with brown, green and blue eyes coalesce.