Pronunciation: (ôf'kul'ur, of'-), [key]
1. not having the usual or standard color: an off-color gem.
2. of doubtful propriety or taste; risqué: an off-color joke.
3. not in one's usual health: to feel off-color. Also, esp. Brit.,off'-col'our. Also,off'-col'ored (for defs. 1, 2).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.