off-color

Adjective

off-col=or

WORDNET DICTIONARY

off-color(s = adj.all) indelicate, off-colour - in violation of good taste even verging on the indecent; "an indelicate remark"; "an off-color joke"
off-color(s = adj.all) bawdy, ribald - humorously vulgar; "bawdy songs"; "off-color jokes"; "ribald language"

off-color, adj.

humorously vulgar; mildly obscene; risque; as, an off-color joke. [WordNet 1.5]