"Black tie" means "tuxedo."
True Or False: TRUE
A tuxedo is required to events that aren't "black tie optional," so you usually can't get away with just rocking a dark suit. It doesn't, however, mean "black." DInner jackets come in a variety of colors, from white and ivory to more modern midnight blues and navys. So push the envelope a little, and besides, every guy should own a tux anyway.