off-color

Definition of Off-color in English :

in violation of good taste even verging on the indecent

Example Sentences:
'an indelicate remark'
'an off-color joke'

2. bawdy, off-color, ribald

humorously vulgar

Example Sentences:
'bawdy songs'
'off-color jokes'
'ribald language'

WordNet Lexical Database for English. Princeton University. 2010.

Off-color

adjective

the US equivalent of off colour (sense 2)

adjective

1.

varying from the usual, standard, or required color

2. US

not quite proper; in rather poor taste; risqué

an off-color joke

adj.

1. Exhibiting bad taste: an off-color joke.

2. Varying from the usual, expected, or required color.

3. Not in good health or spirits.