Types of eye color
Brown, brown, or chestnut-colored eyes contain large amounts of melanin in the anterior part of the iris. Dark brown eyes have a lot of melanin, while light brown (honey-colored) eyes have less. It is one of the most common phenotypes for eye color in humans. The genes that determine this eye color are located on chromosome 15.
Amber is an intermediate color between brown and hazel. The amber eyes are of a homogeneous tone that can go from yellowish to golden reddish.
The hazel is an intermediate shade between brown and green. It can contain several tones within the same iris, that is to say there can be brown, amber or green sectors.
The green eyes are the product of moderate amounts of melanin. Green is an intermediate color between brown and blue tones.
The blue eyes contain low amounts of melanin in the anterior part of the iris.