Brown hair:

Brown hair is produced if eumelanin has a significant level, but not so much that phaeomelanin becomes invisible. Brown is a relatively frequent hair colour, especially in Europe, where it is common almost everywhere except for some parts of Scandinavia and the Baltic region. From Central Europe to parts of Russia it is the most common hair colour. It plays a secondary role after black hair in North Africa, among African Pygmies, in the Near East, Central Asia, Siberia, in West Australians, Melanesians, Polynesians, and some North Indians and Native Americans (Pacifids, Lagids). Brown hair outside of Europe is usually of a dark brown colour, often the transition to black hair is fluent.