Baby eye color predictor: what are the odds?

How eye color is decided

Eye color comes down to melanin, the same brown pigment that colors skin and hair. Little or no melanin in the iris looks blue; more melanin looks green, hazel or brown. Both parents pass along the genes that set how much melanin the iris makes, which is why a child's eyes often land somewhere between the two parents.

The odds by parent eye color

These are general probabilities, not guarantees:

• Both parents blue-eyed — about a 99% chance of a blue-eyed child.
• Both parents brown-eyed, each carrying a recessive blue gene — roughly a 25% chance of blue eyes.
• One parent with two dominant brown genes — less than a 1% chance of blue eyes, even if the other parent carries blue.

Why no predictor is certain

Eye color is polygenic, meaning several genes interact rather than one simple dominant-recessive pair. On top of that, every baby carries dozens of new genetic changes not seen in either parent. One study found brown versus blue could be predicted correctly about 90% of the time, so a predictor gives you strong odds, not a promise.

When eye color settles

Many babies are born with lighter eyes that darken over the first year as melanin builds up. Most reach their final eye color around 6 to 9 months, though some keep changing through about age 3. An early eye color is not always the one your child keeps.

See a likely baby face

A genetics calculator gives odds for a single trait like eye color. If you want to picture the whole face, an AI baby generator blends a photo of each parent into a realistic image of how your future baby could look, features and all. It is a fun visual estimate rather than a genetic guarantee, and it takes only a couple of photos.