Idiom
off-color
Theme: RUDENESS
in bad taste; rude, vulgar, or impolite.That joke you told was off-color and embarrassed me.The nightclub act was a bit off-color.
Slang
off-color
Theme: VULGAR
mod. dirty or smutty; raunchy.That joke was sort of off-color.Tom told an off-color joke that embarrassed everyone.