when do babies eyes change color

Babies' eyes typically begin to change color between 1 to 3 months of age, with the process continuing for several months. For most babies, the final eye color becomes nearly permanent by about 12 months, although changes can sometimes continue up to 2 years or even a few years in some cases. The initial blue or gray eye color in many newborns is due to low melanin levels in the iris, and as melanin production increases, the eye color can darken or shift to green, hazel, or brown. The timeline and extent of change vary based on genetics and melanin development, with the most common period for noticeable color change being between 3 and 9 months of age. Some babies may have their permanent eye color earlier or later, and it is not uncommon for babies' eye colors to shift gradually over the first few years of life.