tuxedo with black shirt royal blue ties – Google Search
1000 ideas about Royal Blue Tie on Pinterest | Blue ties, Groomsmen and Yellow boutonniere
FashionBeans has a great post on men's style basics and is high mixing blue and black. Plus there are some great examples:
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Blue · black suit, navy tie
1000 images about Suit on Pinterest | English, Ryan reynolds and Groomsmen
1000 ideas about Black Suit Black Shirt on Pinterest | Black suits, Suits and Red ties
Jimmy Fallon-Midnight blue suit-white shirt-Navy maroon stripe tie-Tonight
The “Bond Suit”
Image: http://welltied.com/wp-content/uploads/2015/04/Jimmy-Fallon-suits-Black-suit-Light-Blue-shirt-Black-tie-The-Tonight-Show-Starring-Jimmy-Fallon-Monday
etc.
It's not, as a quick google search of "black tie navy suit" will reveal (also I think it helps if the suit incorporates black details):
Jimmy Kimmel suits black suit white shirt light blue tie 04 16 2015
The last fellow doesn't have a suit and tie. It's just to show another color I commonly wear with black. Pair with a Patterned tie very close to the shirt
What Color Shirt With a Men's Black Suit : Men's Fashions, Ties & Handkerchiefs – YouTube
1000 images about Black suit – tie – shirt combos on Pinterest | Tom ford, Teal tie and Suits
jimmy kimmel suits black suits
The International Klein Blue tie. View this image ›
You can even go a step further and use a lighter blue suit with a black tie. Check out this actor's cornflower blue suit with a black tie: