National colours are colours which are associated with a particular country, often found on flags, banners, the uniforms of sports teams, and other such places. They may be officially designated, or may simply arise from tradition. National colours are not always unique — for example, Porto Capital, Eastern Delgamia, and Lamb's Cove all make use of red, yellow, and blue, while Cruisana and Altland both use red, white, and blue.