What is rarest hair color and eye color?

The rarest hair color is red, with only 1-2% of the world's population having natural red hair. The rarest eye color is green, with only 2% of the world's population having this eye color. Blue eyes are also relatively rare, with only around 8% of the world's population having them. However, the prevalence of certain hair and eye colors can vary greatly depending on geographic location, for example, red hair is more common in Scotland and Ireland, while green eyes are more prevalent in Iceland and parts of Northern Europe.