Skip to content
Lizely

Baby Eye Color Calculator

Predict your baby's eye color odds from both parents' eyes

Privacy: your files never leave your device. All processing happens locally in your browser.

How to use

  1. 1.Select the father's eye color from brown, green, or blue.
  2. 2.Select the mother's eye color from the same three options.
  3. 3.Instantly read the predicted probability of brown, green, and blue eyes for your baby.

About Baby Eye Color Calculator

This baby eye color calculator estimates the chance your child will have brown, green, or blue eyes based on both parents' eye color. Choose the father's and mother's eye color and the tool instantly shows the probability of each outcome, drawn from published eye-color genetics charts. For example, two brown-eyed parents have roughly a 75% chance of a brown-eyed baby, about 18.75% for green, and 6.25% for blue; two blue-eyed parents have a 99% chance of a blue-eyed child; and a brown-eyed with a blue-eyed parent splits close to 50/50 between brown and blue.

Eye color comes from melanin in the iris. More melanin makes eyes appear brown, a moderate amount looks green or hazel, and very little produces blue. In simple genetics, brown is treated as dominant and blue as recessive, with green sitting in between, which is why brown-eyed parents so often have brown-eyed children and why blue eyes can skip generations before reappearing.

Reality is more complex than one gene. Eye color is polygenic, shaped by at least 16 genes, with OCA2 and HERC2 on chromosome 15 doing most of the work. Because so many genes interact, no combination of parents guarantees a single outcome. That is also why two brown-eyed parents can still have a blue-eyed baby: both can carry a hidden blue variant and pass it on together.

Here is how common parent combinations tend to break down. Brown and brown leans strongly brown but leaves room for green and blue. Brown and green usually gives brown or green, with a smaller blue chance. Brown and blue is close to an even brown-or-blue split. Green and green favors green, with some blue. Green and blue splits between green and blue. Blue and blue almost always yields blue. Every set of percentages here adds up to 100% so you can read them as the full range of likely results.

Treat these numbers as a fun, educational estimate rather than a prediction. A real baby's eyes can also change during the first year: many infants are born with lighter eyes that darken as melanin develops, so the final color may not settle until 6 to 12 months of age. The calculator cannot account for grandparents, rarer colors like hazel, amber, or gray, or the specific gene variants each parent carries. It is not a medical or genetic test, just a quick, science-informed way to explore the possibilities before your baby arrives.

Frequently asked questions

Can two blue-eyed parents have a brown-eyed child?
It is very unlikely but not impossible. Because eye color depends on many interacting genes, a rare variant can add enough melanin to produce brown eyes. In simplified charts two blue-eyed parents have about a 99% chance of a blue-eyed baby, so a brown-eyed child is the rare exception rather than the rule.
How is baby eye color inherited?
Eye color reflects how much melanin sits in the iris, controlled by 16 or more interacting genes led by OCA2 and HERC2. Brown behaves as dominant and blue as recessive, with green in between. Children inherit a mix of variants from both parents, so the result is a blend of probabilities rather than a copy of either parent.
How accurate is this baby eye color calculator?
Treat it as an educated estimate, not a guarantee. The percentages come from published genetics charts that simplify a complex, polygenic trait. It cannot read your family's specific gene variants or grandparents, so real outcomes vary. It is meant for fun and general learning, not medical or genetic advice.
Where do green eyes come from?
Green eyes have a moderate amount of melanin, sitting between brown and blue. A child is most likely to have green eyes when at least one parent has green eyes, or when two brown-eyed parents each carry hidden green and blue variants that combine in the child.
When does a baby's eye color become permanent?
Many babies are born with lighter or bluish eyes because melanin is still developing. The color often deepens over the first several months and usually settles by about 6 to 12 months of age, though small changes can sometimes continue a little longer.

Related tools

Calculators guides

View all