Skin colour is determined by the expression of the protein melanin. Two types of melanin create the range of skin colours seen in the human population, with pheomelanin responsible for the red and eumelanin for the dark brown to nearly black. Both amount and type of melanin produced by an individual are determined by four to six genes inherited from the father and mother which when combined, determine the final skin colour of the children. Therefore, you and your husband may well have genes that give dark and light skin colour, but your child inherited only the light skin colour genes.
If the father of my baby is light skinned and I'm dark skinned what color will my baby be?
My baby was born very light and his father and I are dark skinned. My mother and my son are the same complexion. He looks more like hers than mine, but his features are like his daddy.
The parents' skin color doesn't determine that of their children. Basically, this goes back to pure science. You know- chromosomes, DNA, genetics and all that other stuff. Look at your own family. Are either one of your parents light skinned? Is your grandmother light skinned? Is his? That's probably why.