The shades lighter than navy should appear more, especially in coats. It brightens the mood in a winter landscape, too often dominated by black and gray, especially in horrible puffer coats.
Blue coats always make me think of Julien Sorel, the protagonist in the Red and the Black. He was given one by his patron, the marquis, and this enabled him to feel on a level with the aristocrats whom he was attempting to impress. Of course, I would think that the coat in that case was a dress garment and not an outdoor coat.