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 Hungary explicitly state anything about the width:length ratio of the flag; but, there is a law from 1957 that is in force stating that seagoing merchant vessels shall hoist the red–white–green tricolour in 2:3 ratio. By a government decree from 2000, the ratio (which is neither defined in the Constitution nor in 1995 or 2000 legislation) of flags used on government building is 1:2. Summarized, this would mean: Flag of Hungary The flag of Hungary (, more commonly ) is a horizontal tricolour of red, white and green. In this exact form, it has been the official flag of Hungary since