What is the most common eye color in the world

The most common eye color in the world is blue.This may come as a surprise to you, but it is true. More than half of all humans are blue-eyed. The other eye colors are red, brown, and gray. There are many different theories about why this happens, but the most popular one is that there is a gene that determines eye color. This gene, known as the UIR melanin receptor gene, makes the protein melanin that gives color to your eyes and skin. If this gene is not working properly, you will have blue eyes instead of brown or red ones.The next most common eye color is brown. This can be either hazel or dark brown. Red eyes are also fairly common because of genetic mutations or because of injury to the surface of the eye (for example, from a reaction to a chemical). There are also some rare eye colors, such as green and gold (these colors do not always look natural on people though).