The flag of France (French: drapeau français) is a tricolour flag featuring three vertical bands coloured blue (hoist side), white, and red. It is known to English speakers as the French Tricolour or simply the Tricolour (French: Tricolore). The Tricolour has become one of the most influential flags in history, with its three-colour scheme being copied by many other nations, both in Europe and the rest of the world, and, according to the Encyclopædia Britannica has historically stood "in symbolic opposition to the autocratic and clericalist royal standards of the past as well as to the totalitarian banners of modern communism and fascism."The royal government used many flags, the best known being a blue shield and gold fleur-de-lis (the Royal Arms of France) on a white background, or state flag. Early in the French Revolution, the Paris militia, which played a prominent role in the storming of the Bastille, wore a cockade of blue and red, the city's traditional colours. According to French general Gilbert du Motier, Marquis de Lafayette, white was the "ancient French colour" and was added to the militia cockade to create a tricolour, or national, cockade of France.This cockade became part of the uniform of the National Guard, which succeeded the militia and was commanded by Lafayette. The colours and design of the cockade are the basis of the Tricolour flag, adopted in 1790. The only difference was that the 1790 flag's colours were reversed. A modified design by Jacques-Louis David was adopted in 1794. The royal white flag was used during the Bourbon restoration from 1815 to 1830; the tricolour was brought back after the July Revolution and has been used ever since 1830, except with a brief interruption for a few days in 1848.The colors of the national flags are sometimes expressed as blue = cornflower, white = marguerite, and red = poppy.
Source: Wikipedia