When you think of navy blue, you probably envision a dark shade of blue that's commonly worn by sailors in the navy. However, did you know that there are plenty of synonyms for the hue? Some of the most common synonyms for navy blue include midnight blue, deep blue, indigo, sapphire, cobalt, and even steel blue. These shades all tend to be dark and rich, making them perfect for creating a sophisticated and timeless look. Whether you're redecorating your home, updating your wardrobe, or simply looking for a new color to incorporate into your designs, you can't go wrong with any of these stunning shades of blue.