Hello, I'm an expert in genetics and human biology with a focus on the diversity of human traits, including hair color. When it comes to the rarity of hair colors, there are a few factors to consider, such as the genetic basis for hair color and the distribution of these genes across different populations.

The rarest hair color in the world is often considered to be red, specifically a naturally occurring vibrant red. This is because the gene responsible for red hair, the MC1R gene, is recessive. This means that an individual must inherit two copies of the gene—one from each parent—in order to express red hair. The frequency of red hair is highest in individuals of Northern European descent, particularly those from Scotland and Ireland, where it can be found in about 10-13% of the population. However, globally, red hair is much rarer, affecting approximately 1-2% of the human population.

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Blue eyed redheads are super rare. Blue eyes and red hair forms the rarest combo on earth. Most (natural) redheads will have brown eyes, followed by hazel or green shades.read more >>