- a very dark blue colour; bluish black
- (as adjective)a midnight-blue suit
Blue SteelRead more in this article about some frequently asked questions and fun facts related to our definitions.
Blue WaffleRead more in this article about some frequently asked questions and fun facts related to our definitions.
- midnight oil,
- midnight sun,
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Examples from the Web for midnight blue
She poked a hand from beneath her midnight-blue dressing gown.
Enveloped in a midnight-blue gown, she wandered out on deck.