Delaware blue and buff license plate with official state nickname: "The First State" (colonial blue and buff are Delaware's official colors). Colonial blue is actually a lighter shade (seen on the Delaware flag), but the blue on the plate is darker for contrast / visibility. Photo by Norm Russo (used by permission).
Official State Colors of Delaware
The shades of buff and colonial blue represent the uniform colors of General George Washington as shown on a specific plate from an official U.S. Army publication.