The national flag of South Africa was designed in March 1994 and adopted on 27 April 1994, during South Africa's 1994 general election, to replace the previous flag used from 1928–1994. The flag has horizontal bands of red (on the top) and blue (on the bottom), of equal width, separated by a central green band which splits into a horizontal "Y" shape, the arms of which end at the corners of the hoist side (and follow the flag's diagonals). Three of the flag's colours were taken from the flag of the South African Republic, itself derived from the flag of the Netherlands, and the Union Jack, while the remaining three colours were taken from the flag of the African National Congress. Each was also entitled to a colonial flag, in keeping with the British tradition. In 1968, the then Prime Minister, John Vorster, proposed the adoption of a new flag from 1971, to commemorate the tenth anniversary of the declaration of a republic, but this never materialised.