According to multiple sources, green eyes are the rarest eye color in the world, with only about 2% of the worlds population having naturally green eyes. This makes green eyes a sought-after color. The highest concentration of people with green eyes is found in Ireland, Scotland, and northern Europe, where more than three-fourths of the population has blue or green eyes. In the United States, about 9% of people have green eyes. Brown eyes are the most common eye color worldwide, with over 50% of the worlds population having brown eyes. Blue eyes are the second most common eye color globally, with estimates suggesting that 8-10% of people have blue eyes. Hazel and amber eyes are rarer than brown and blue eyes but more common than green eyes, with approximately 5% of the worlds population having hazel eyes and about 5% having amber eyes.