Most Flags Combine Red, White and Blue
Vexillology
Most international flags have three colors: red, blue and white. Prominent examples are the United States, the United Kingdom and France. Until 2011 there was one flag with just one color: Libya, which flew a solid green flag, but has adopted a flag with 4 colors after the ousting of former strongman Muammar Gaddafi. This infographic considers the flags of the 193 United Nations member states.
Description
Most frequent colors and number of colors per flag used in national flags worldwide (in percent)
