The iris contains a lot of melanin, which gives it colour and provides UV protection.
A child is more likely to receive brown eyes if one parent has brown eyes and the other has a lighter colour.
Depending on the amount of melanin present, they can be pale amber to almost black.
Brown eyes are associated with honesty and dependability in many cultures.
Experts believe that brown eyes grew more prevalent when humans relocated to sunnier areas.
The depth and beauty of brown eyes are frequently praised in songs, poems, and artwork.
They are often described as mysterious, implying a hidden world full of secrets and legends.