Complimentary Colors work well together otherwise they would not be complimentary. Do try mixing and matching cool tones. Brighten up a Denim Shirt & Black Leather Pants with Purple Accessories. Pull the look together with a bright blue shoe. Make the look more sophisticated with a dark grey princess coat.
The Trick- Keep the bottom layer dark. In this case navy.
Next Find a statement layering piece in a lighter color blue
Then Match the color of the jacket to the bag or at least in very close shades of the same tone. The shoes will take you day to night & with the dress it’s a great date night outfit.