off-colour vs indelicate

off-colour and indelicate both are adjectives.

Word	Noun	Adjective	Verb	Adverb
off-colour	No	Yes	No	No
indelicate	No	Yes	No	No

As adjectives, off-colour and indelicate are synonyms defined as:

off-colour and indelicate: in violation of good taste even verging on the indecent

Other synonyms of off-colour include off-color.

off-colour (adjective)	indelicate (adjective)
in violation of good taste even verging on the indecent	lacking propriety and good taste in manners and conduct
	verging on the indecent
	in violation of good taste even verging on the indecent