Baby Eye Color & Hair Color Predictor

Eye color and hair color are among the first things parents wonder about. Our predictor uses Mendelian genetics to estimate the most likely colors, based on both parents' characteristics. Select eye color, hair color, skin tone, and blood type for instant probability percentages.

Eye Color Inheritance

Eye color is controlled primarily by OCA2 and HERC2 genes on chromosome 15. Brown eyes (most melanin) are dominant. Blue eyes (low melanin) are recessive. Two brown-eyed parents carrying recessive blue genes have ~25% chance of a blue-eyed child. Two blue-eyed parents produce blue-eyed children ~72% of the time, with small chances of gray or green.

Hair Color Genetics

Two melanin types control hair color: eumelanin (brown-black) and pheomelanin (red-yellow). MC1R gene variants produce red hair, requiring two copies. Dark hair is dominant. Two dark-haired parents carrying recessive fair genes can have lighter-haired children. The calculator models melanin darkness scales to produce the most likely outcomes.

Blood Type and Skin Tone

Blood type follows strict Mendelian patterns: A and B are co-dominant, O is recessive. Two O parents always produce O children. Skin tone uses a blending model as a polygenic trait. Results are probability lists — estimates, not guarantees. Explore appearance or genetic traits next.