Gang colours include clothing, accessories, or tattoos of a specific colour or colours that represent an affiliation to a specific gang or gang branch.
The earliest criminal street gangs in the United States were in New York City, from the 1820s-1860s, were politically-aligned with one of two prominent political parties, the anti-immigrant Nativist, Know Nothing Party or Irish immigrant-based Tammany Hall of the Democratic Party who wore distinctive gang colors to differentiate themselves from their allies and rivals. The most notorious and prominent of the New York gangs who could field 50-200 members per gang were the Nativist Bowery Boys, Atlantic Guards, and Plug Uglies versus the Irish American gangs of the Dead Rabbits, Roach Guards, and Shirt Tails.
The Roach Guards wore a blue stripe on their trousers and the Atlantic Guards and Dead Rabbits wore a red trouser stripe. The Bowery Boys wore neckerchiefs, red shirts, tall stove pipe hats, long, black, frock coats, and trousers tucked into high heel calf boots to identify them with their New York City Fire Department volunteer fire company origins and Nativist affiliations.
The most recognizable form of gang affiliation is based on color. Bandanas come in a wide range of colors and can be paired with other pieces of clothing to represent all colors of the gang. Not only are bandanas an easy way to show gang affiliation they are also easy to remove if the situation calls for it (i.e. if confronted by law enforcement). Gang members are known for wearing bandanas around their face as a mask, or in their pocket, with it sticking out.