Baby Eye Color Calculator
Calculate the probability of your baby's eye color based on parent genetics.
Parent 1
Parent 2
Eye Color Probabilities
Most dominant eye color globally
Relatively rare, found in ~2% of population
Recessive trait, more common in European descent
Genetic Inheritance
Brown is dominant over other colors
Green/Hazel results from mixed inheritance
Blue eyes require recessive genes from both parents
Important Notes
Baby's final eye color typically develops by age 3
Most babies are born with blue eyes that may change
Take monthly photos to track eye color changes
Consult pediatrician if eye color is different between eyes
Understanding Eye Color Genetics
Eye color inheritance is a complex trait determined by multiple genes. The two main genes involved are OCA2 and HERC2, which influence the amount and type of melanin in the iris.
Key Facts About Baby Eye Color
- Most babies are born with blue or gray eyes
- Eye color typically stabilizes by age 3
- Brown is the most dominant eye color gene
- Blue is a recessive trait
- Green and hazel are variations of brown and blue interactions
Inheritance Patterns
- Dominant Brown:
One brown-eyed parent can pass dominant genes to children
- Recessive Blue:
Both parents must carry blue eye genes for blue-eyed children
- Complex Green/Hazel:
Results from interactions between brown and blue genes
Factors Affecting Eye Color
Genetic Factors
- Multiple gene interactions
- Parental genetic makeup
- Ancestral inheritance
Environmental Factors
- Age-related changes
- Sun exposure
- Medical conditions