The flag of Peru is a vertical tricolour with the colours (from the hoist side of the flag to the fly side of the flag) red, white and red. This flag design was officially adopted on 31 March 1950. The colours of the flag of Peru have various symbolism - red is said to represent blood spilled whilst white is said to represent peace and purity. The colours of the Peru flag were chosen by Jose de San Martin, leader of the army that freed Peru from Spanish rule. The flag's ratio is 2:3. Peru celebrates a national Flag Day on 7 June, the anniversary of the Battle of Arica.