This Peru State flag 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. At the centre of the flag is the national coat of arms of Peru. This flag design was officially adopted as Peru's national flag on 25 February 1825 but replaced in 1950 by a simpler version minus the coat of arms; it remains the official state flag of Peru. The colours of the Peru State flag have various symbolism - red is said to represent blood spilled whilst white is said to represent peace and purity. The colours of the Peru State 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.