off-color

adjective4

1. •
   Of the wrong color.

   • Careful control of mixing at the central point reduces the possibility of off-color paint in some booths, and uniform pressure at the spray guns is easily maintained. — 1936
2. •
   Dirty, vulgar or obscene, especially in a way that is unpleasant.

   • He told an off-color joke.
3. •
   Feeling mildly unwell.

   • I feel a bit off-color today.
4. •
   Different from usual.

   • Even the roadside sights seemed a little off-color and was just beginning to lose some of its summer luster. — 2014