Hello, I'm an expert in human genetics and physical anthropology. When it comes to the most common eye color globally, it's important to note that this can vary significantly depending on the region and the population being considered. However, brown is generally considered the most common eye color worldwide due to its prevalence in populations with ancestry from areas such as Asia, Africa, and South Europe.

Brown eyes are the result of higher levels of melanin in the iris, and they are dominant in terms of genetics. This dominance, along with the high frequency in certain populations, contributes to brown eyes being the most common.

In contrast, blue eyes, which have less melanin and are a recessive trait, are more frequently found in populations with Northern European ancestry.
Green and hazel eyes are even rarer and are the result of a combination of genetic factors.

It's also worth mentioning that eye color can be influenced by more than just a single gene, and the expression of eye color is a complex trait. Additionally, the frequency of eye colors can change over time due to migration, intermarriage, and genetic drift.

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Here are some of the most common and rarest eye colors found around the world.Brown Eyes. With brown-eye people making up more than 55% of the global population, brown eyes are the most common eye color amongst people. ... Blue Eyes. ... Hazel Eyes. ... Green Eyes. ... Silver Eyes. ... Black Eyes. ... Red or Pink Eyes. ... Amber Eyes.More items...read more >>