adjective satellite (s)

• in violation of good taste even verging on the indecent(adj.all)

  Example:
  An off-color joke.
  

  Synonym:
  indelicate, off-colour
  

  source: wordnet30
• humorously vulgar(adj.all)

  Example:
  Off-color jokes.
  

  Synonym:
  bawdy, ribald
  

  source: wordnet30