"Form of Crimson"
The name Krimson is commonly a unisex name from the "American" origin.
Krimson is a modern respelling of Crimson, the English color word for a deep red. That color term came into English through Old Spanish cremesin from Arabic qirmiz, which referred to the kermes insect used as a red dye source. The K spelling is consistent with the name's first appearance in United States birth records in 2000 rather than with any earlier naming tradition.
Crimson means "As rich and deep as the color".
The pronunciation of Krimson is KRIM-suhn.