In Bible history, there is no such thing as race. There are the nations of Shem, Ham, and Japeth (brothers).
Adam is Hebrew for red man. Esau and David were described as ruddy (reddish). Vikings are described like this. Native Americans were called red men. Many folks have an olive skin color.
After men were scattered over the earth, I believe the environment began to play a part in skin color. As a young child, I was very dark complexioned. At about 12 yrs old, I began to dislike playing outside in winter. I preferred to stay inside and read a book. After one very bad sunburn (fell asleep while tanning outside), I stopped tanning as a teenager. Eventually, I became very fair skinned as I am now.
Culture is derived from the practices of a group which usually follows the lead of the dominant members of the group. Thus, nations began to develop different cultures. Here is where the diversity lies. I don’t see any reason to take skin color into account for our differences. But, I think it is a good thing to show mutual respect and allow for our differences in our cultures. I enjoy learning from those different from me.
I was speaking scientifically, not in terms of the bible. Race is defined by much more than color - also head shape, eye shape, nose, etc.