For sure! Drudes, an android race of my creation, all look extremely similar. 06222 is one of the oldest but still not unique in a crowd. She shares almost the same hex color values with 24884. This is 100% intentional.
For some reason I have a lot of yellow/gold/orange characters, not on purpose at all. Oros is a gold dragon, Gunhild is a yellow horse, Havana is also a yellow horse, Lodestar is a grey and yellow lion cyborg, Firebrand is a cream, black and orange canine, Tsugi is a grey, blue and yellow shark hybrid, and Sen is an orange kirin. This is about half my characters and I don't know how it happened.