Baby Eye Color Predictor
👩 Mother's Information
👨 Father's Information
👶 Baby's Eye Color Probability
🧬 Genetic Explanation
⚠️ Important: Eye color genetics is complex and influenced by multiple genes. This calculator provides probability estimates based on simplified genetic models. Actual results may vary. Most babies are born with blue or gray eyes that may change color during the first 3 years of life.
👁️ Eye Color Development Timeline
Most babies are born with blue or gray eyes due to lack of melanin in the iris.
Melanin production begins. Eye color may start to darken or change.
Significant color changes often occur. True eye color becomes more apparent.
Final eye color usually established, though minor changes can still occur.
Baby Eye Color Predictor - Genetics Calculator
👶 Predict your baby's eye color based on genetic inheritance from parents and grandparents. Our calculator uses established genetic principles to estimate probability.
How Eye Color Genetics Work
Eye color is determined by multiple genes, primarily OCA2 and HERC2. Brown is dominant, while blue is recessive. However, the actual inheritance is polygenic (multiple genes involved), making it more complex than simple Mendelian genetics.
Eye Color Dominance
- Brown: Most dominant - if one parent has brown eyes, higher chance of brown-eyed baby
- Green: Intermediate - less common, requires specific gene combinations
- Hazel: Mix of brown and green - moderate dominance
- Blue: Recessive - both parents must carry blue eye genes
- Gray: Similar to blue, very recessive
Common Combinations
- Both parents brown: 75% brown, 18% green, 6% blue
- Both parents blue: 99% blue, 1% green
- One brown, one blue: 50% brown, 37% green, 12% blue
- Both parents green: 75% green, 24% blue, 1% brown
Why Babies' Eyes Change Color
Melanin, the pigment that determines eye color, isn't fully present at birth. Exposure to light triggers melanin production in the iris over the first 6-12 months. This is why many babies born with blue eyes develop brown or green eyes later.
Eye Color Statistics Worldwide
- Brown: 79% of world population
- Blue: 8-10%
- Hazel: 5%
- Amber: 5%
- Green: 2% (rarest)
- Gray: Less than 1%
Factors Affecting Eye Color
- Genetics: Primary determining factor
- Melanin levels: Amount of pigment in iris
- Light exposure: Stimulates melanin production
- Age: Eyes can lighten or darken with age
- Health conditions: Some diseases can affect eye color
Rare Eye Colors
- Violet: Extremely rare, caused by low melanin + light scattering
- Red/Pink: Associated with albinism
- Heterochromia: Two different colored eyes
- Central Heterochromia: Different colors in same eye
💡 Did You Know? Green eyes are the rarest worldwide at only 2% of the population. They're most common in Northern and Central Europe. The green color comes from moderate melanin combined with light scattering in the iris.
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