57. But Yellow Remains
Interestingly, 2-3% of women are tetrachromats, endowed with four types of color cones versus the average of three in trichromats, suggesting a potential for a broader color perception spectrum. However, most tetrachromats do not functionally perceive this fourth color.

The discovery of a true tetrachromat hints at the vast potential of human vision. In contrast, the mantis shrimp stands out in the animal kingdom with 16 color cones, showcasing the most sophisticated visual system known, far surpassing human capabilities.