off color

off-color

Rude or vulgar; likely to offend others, especially due to being sexually explicit or suggestive. Primarily heard in US. A: "What did you think of the awards ceremony last night?" B: "I found the presenter's jokes a bit too off-color for my taste." I'm afraid I may have gotten on your friend's bad side with my off-color remarks.
Farlex Dictionary of Idioms.

off color

mod. dirty or smutty; raunchy. (Usually hyphenated before a nominal.) That joke was sort of off color.
See also: color, off
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • off-color
  • off-colour
  • off colour
  • be off-color
  • be near the knuckle
  • near the knuckle
  • have you heard
  • Have you heard?
  • pecker slap
  • suggestive
References in periodicals archive
If you feel off color and unwell in the middle of flu season, lighten up on your workout or take a day off.
Run away from cold and flu season
Dash has a particular eye for odd, subtly off color; in his recent book, Notes from Madoo, he observes that in Pennsylvania salvia the "blues go a bit into wet-litmuspaper violets."
ACA GALLERIES
Indeed, the planners showed off color renderings of block sections with masses of signage, lights, neon, holography, and a concert of colors.
New Times Square plans are unveiled
It is also important to remove any food particles from the oil between each batch to prevent any off colors or flavors from developing.
FiSh and CHiPS
His preference for centrifugal and centripetal forces instead of alloverness, his off colors that frequently hover precariously between the cornball and the sublime, and his recent return to the precise contours and the aggregations of discrete organic shapes that similarly configured his work of the early '70s, as well as his quixotic soulfulness, would all predispose Mueller to Tibetan painting.
Another kind of light: the art of Stephen Mueller