Tetrachromacy is the condition of possessing four independent channels for conveying color information, or possessing four types of cone cell in the eye. Organisms with tetrachromacy are called tetrachromats.

What does Tetrachromatic vision look like?

If you see between 33 and 39 colors, you are a tetrachromat and have four types of cones. Derval says tetrachromats are irritated by the color yellow but are less likely to be tricked by the blue/black or white/gold dress, no matter the lighting. Only about 25 percent of the population is tetrachromat.

What colors do tetrachromats see?

Tetrachromats can see 100 times more colours than the average human due to their fourth cone, which gives them this heightened colour perception. They contain types of cone cells which are sensitive for reds and greens, blue and ultra-violet light.