I have to agree with Kimmie - I have a Balenciaga in ink, too! And I LOVE the color. I think it goes best with denim, gray, burgundy and navy, but it's actually neutral enough to go with just about anything. It's not bad with black, but be/c both colors are so dark I think you don't see the lovely shade of blue as much.
Coach uses color in a great way, most of us are afraid of "color" that's why there are a lot of "white" walls in our houses. Consider the color wheel, tone and contrasts. Navy w/cream, camel, army green, navy w/red, burgundy, browns, navy w/soft yellows/ochres, Blue and Gold are great! It really is neutral and you can also make it pop. And, traditionally you don't wear it with black. Have fun with it. I am not against black, but it is not my most favorite. Black is flat, navy has depth and is richer in color.