The national flag of Belgium is a tricolour flag consisting of equal sized vertical bands of (from hoist side) black, yellow and red. The flag has the proportions of 13:15.
The flag of Belgium has its origins on 26 August 1830 when, at the start of the Belgian Revolution which saw the country gain its independence from the Netherlands, the tricoloured flag of France which had been flying from the city hall in Brussels was torn down and replaced with a horizontal red, yellow and black tricolour. However, it wasn't until 23 January 1981 that the present day design was adopted with the flag switched to a vertical tricolour and the colours shifted to differing positions.
The colours of the Belgian flag are believed to derive from the coat of arms of the Duchy of Brabant. This coat of arms featured a black shield containing a gold lion with red tongue and red claws.
The flag of Belgium flies outside the Belgian Federal Parliament building in Brussels
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