One prominent feature that can be noticed in the eye is its color. There are basically different eye colors and these are dependent on the type of pigments prensent in the eye's iris. The main reason of varying eye colors is the melanin content within the iris stroma.
The most common eye colors are brown, hazel, gray, and blue. On the other hand, the rarest eye colors are amber, green, violet, red, and black.
Here are some photos of people having the rarest eye color.
Amber
Amber eyes can be defined as the ones having a strong yellowish/golden and russet/coppery tint. The reason behind amber eyes is the deposition of ‘lipochrome’, the yellow pigment, in the iris. It is a very rare eye color and also known as ‘wolf eyes’, since amber eye color is very common in wolves.
Green
Green eye color is amongst the rarest eye color, with only 1-2% of the world's population born with green eyes. The reason for green eye color is the production of moderate amounts of melanin. People born in Northern Europe and Nordic countries (like Iceland, Sweden, Denmark, Finland, Norway, Germany, and Netherlands) usually have green eyes.
Violet
Violet eyes are mainly seen in albinos. In effect, the eyes of some albinos appear to be violet because of the mixing of red and blue reflections. Violet eyes are either a form of blue eyes or a mutation.
Red
Red is probably the rarest eye color amongst the human population of the world. It is mainly seen in case of albinos and is the result of either large quantities of the ‘normally scarce’ red areas in the eyes or a small leakage of blood into the iris.
Black
Black is amongst the rarest eye colors in the world. Most of the people who appear to have black eyes have, infact, extremely dark brown eyes that seem to be black.
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