'off-color' definitions:

Definition of 'off-color'

From: WordNet
adjective
In violation of good taste even verging on the indecent; "an indelicate remark"; "an off-color joke" [syn: indelicate, off-color, off-colour]
adjective
Humorously vulgar; "bawdy songs"; "off-color jokes"; "ribald language" [syn: bawdy, off-color, ribald]