The French tricolor flag, flown since 1830, features these 3 colors
Answer Red, white, and blue
Prior to the French Revolution, the country's flag was an elaborate affair with the blue shield and gold fleur-de-lis of the royal coat of arms. Naturally, this wouldn't do for a post-King, post-Revolution nation. The new leaders wanted a simpler design that supported the new values of the nation: Liberté, Égalité, Fraternité.
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