Peacoat is a dark shade of navy blue color. It is a color from the blue color family. Peacoat color is closer to black than blue. The original navy pea coat was generally made of a navy color to match the rest of the navy uniform. Nowadays, pea coats come in a variety of colors and weights, and designers experiment with different fabrics, like cashmere or even leather. If you prefer a more traditional feel, choose a navy version in the classic coarse wool. However, if this is not your style, then choose what feels best for you. Pea coats now come in almost any color, so if you prefer lighter or brighter styles, go for it.