Although there is no definitive way to accurately determine the number of people in the world with hazel eyes, experts estimate that around 5 to 8 percent of the world's population have this eye color. Hazel eyes are similar to brown eyes, but are lighter in color with a slight greenish-yellow tint.
The most prevalent eye color in the world is brown; more than 50 percent of the population of the world has brown eyes. Green eyes are among the rarest, representing just 2 percent of the population. Silver and amber eyes are also quite rare, with the former being seen generally in European countries and the latter in South American and Asian countries.