The flag is divided diagonally by a yellow-edged black band from the lower hoist-side corner. The upper triangle (hoist side) is green and the lower triangle is blue. The meaning of the colours is as follows:
green represents the natural vegetation present in the country,
yellow represents the rich mineral deposits of the country,
black represents the skin colour of Tanzanians,
and blue represents the numerous lakes and rivers and the Indian Ocean.
Flag of Tanganyika (1 May 1961 to 26 April 1964) and Tanzania (26 April 1964 to 30 June 1964)