I don't know about auburn and "bluey"-- if you lighten (whiten or bleach) very dark brown (black hair-- or other organic material) you get auburn-- a white-ish shade of brown--

Hair color (and natural wood) often "redden" as you lighten them. Auburn is more common than a true red--and you could get auburn just from the effects of sun bleaching on dark hair.

and just in case you didn't know "red heads are naturally superior"-- (thus speaks the mother of a red headed child.-- I am a blond- at one point, early in my life, it was naturally so --my parents and siblings are all very dark-- from dark brown to blackish brown hair-- my ex too had dark hair-- but once or twice--in each generation there is a red head--my daugher is the only one in her generation (actually, she is the only living red head in the family).