Tricolour (flag) orange-white-blue design of the Prince's Flag ("Prinsenvlag", predecessor of the flags of the Netherlands and Luxembourg), used from 1579 by William I of Orange-Nassau in the Eighty Years' War, establishing the independence of the Dutch Republic from the Spanish Empire. Though not the first tricolour flag, one of the most famous, known as "Le Tricolore", is the blue, white and red (whence also called "Le Bleu-Blanc-Rouge") flag of France adopted in the French Revolution. With the formation of French client republics after 1795, the revolutionary tricolour was exported and adopted more widely in Europe, by the Republic of Alba 1796
Flag of Chad Flag of Chad The national flag of Republic of Chad (, ) is a vertical tricolour consisting (left to right) of a blue, a gold and a red field. Its similarity to the flag of Romania, which differs only in having a lighter shade of blue (cobalt rather than indigo) has caused international discussion. In 2004, Chad asked the United Nations to examine the issue, but then-president of Romania Ion Iliescu announced no change would occur to the flag. The flag of Chad is a vertical tricolour consisting (left to right) of a blue, a gold and a red column.