off-color

/AO1 F K AH0 L ER0/
adjective
  1. 1

    Of the wrong color.

  2. 2

    Dirty, vulgar or obscene, especially in a way that is unpleasant.

    โ€œHe told an off-color joke.โ€

  3. 3

    Different than usual.

  4. 4

    Feeling mildly unwell.

    โ€œI feel a bit off-color today.โ€

Source: https://en.wiktionary.org/wiki/off-color