Here the top 10 of the rarest eye colors in the world -Heterochromia Eyes of uncommon color call the attention, but it would be even more rare to see a person with eyes of different colors. -Central Heterochromia This is a kind of heterochromia, also known as cat eyes and can be considered even way rarer than the last one. -Red Vampires might not exist, but at least the red eyes that characterize them do. -Black These eyes are characterized by a dark iris, almost impossible to differentiate it from the pupil. -Violet Since it’s an uncommon color, urban legends trying to explain the origin of this colors were made, one of them is the Alexandria’s syndrome. -Silver This is probably one of the hardest colors to believe it actually exists, silver eyes are a reality and although they’re similar to blue eyes, from a genetic point of view, they have different hues. -Green Only 2% of the population have this kind of eyes and the females are the ones who usually possess them. -Amber Color honey eyes can change from yellowish to golden or copper, which can be found between hazelnut and green colors. -Blue According to studies from the professor Hans Eiberg, blue eyes we caused by a single person coming from the Black Sea who suffered a genetic mutation between the years 6 000 and 10 000. -Hazelnut Don’t mistake this color with the dark ones. This weird tone is between green and brown, it must not be confused with the heterochromia either.