What is rarest hair eye combo?

The rarest hair and eye combination is red hair and blue eyes. It is estimated that only around 1% of the world's population has this unique combination. The genetic mutation that causes red hair and fair skin is also linked to the gene for blue eye color, which is why these two traits often occur together. Interestingly, red hair and blue eyes are most common in people of Celtic or Northern European descent. However, the combination is still very rare even in these populations. Overall, the rarity of red hair and blue eyes makes it a highly unique and sought-after trait.