What’s the rarest eye colour?

The rarest eye color is^[3] a subject of debate, with various sources citing different colors as the rarest. Some sources claim that red and purple eyes are the rarest, while others suggest that gray eyes are now considered rarer than green eyes. The American Academy of Ophthalmology^[2], as reported by USA Today, states that green eyes are the rarest^[5], accounting for only 2% of the global population. However, green eyes are also common in^[4] certain regions, such as Ireland, Scotland, and northern Europe. Overall, genetics and geography play^[1] a significant role in the rarity of eye colors^[1], with gray, green, red, and purple eyes all being considered rare.