tricolors

Tricolors are flags with three distinct colors arranged in three equal bands. They are usually horizontal or vertical and may be plain or carry a central symbol, coat of arms, or emblem. The term is also used for any three-colored design used beyond national flags, but in vexillology it most commonly refers to national flags.

While three-color flags appeared in various forms across the world, the modern tricolor as a political and national symbol largely arose in Europe during the late 18th century. The French tricolor of blue, white, and red became widely associated with republicanism and liberty after the French Revolution and influenced many other flags. From the 19th century onward, countries in Europe, the Americas, and elsewhere adopted their own tricolor flags, often selecting colors with historical, regional, or political significance.

Vertical tricolors are common in Francophone and some European nations: France (blue–white–red), Italy (green–white–red), Ireland (green–white–orange), Belgium (black–yellow–red). Horizontal tricolors include the Netherlands (red–white–blue), Russia (white–blue–red), Germany (black–red–gold), and Hungary (red–white–green). Some flags use a vertical arrangement but with a central emblem, such as Mexico (green–white–red with coat of arms) and Moldova (blue–yellow–red with emblem). Romania and Chad have nearly identical blue–yellow–red schemes, with minor distinctions used to differentiate the two in international practice.

Today tricolors remain common in national flags and regional flags, and the three-color design continues to symbolize ideas such as unity and national identity, though color meanings are not universal and vary by country. In vexillology, tri-band flags are a standard category and are analyzed for color contrast, proportions, and symbolism.