Don't confuse this dark blue spiral coil with our navy coil. Unlike our navy coil which is closer to a shade of black, our dark blue color coil actually appears blue (no offense, navy). If you're looking for a dark, subdued binding coil to pair with a similar paper or plastic binding cover, this dark blue color coil is the answer. Not necessarily as bright as a standard blue and certainly stronger than a light blue, our dark blue coil is compatible with all the popular spiral binding machines on the market today.