Flags of the world

What is vexillology?

Vexillology is the scholarly study of flags — their history, design, symbolism, and use. The word comes from the Latin vexillum, meaning a small square of cloth used as a military standard in ancient Rome. National flags are among the most recognisable symbols in the world, and the patterns on them often reflect centuries of history, religious tradition, and political identity.

Common flag design patterns

Most national flags follow one of a handful of structural layouts. Horizontal tricolors — three equal horizontal bands — are the most common pattern globally, used by Germany, Russia, the Netherlands, and many others. Vertical tricolors appear on France, Italy, and Nigeria. Nordic crosses, offset toward the hoist, define the flags of Sweden, Denmark, Norway, Finland, and Iceland. The canton design places a distinctive emblem or pattern in the upper-left corner, as seen on Australia, New Zealand, and the United States. Pan-Arab colors (red, white, black, and green) unite many flags across North Africa and the Middle East, while Pan-African colors (red, gold, and green) link the flags of many sub-Saharan African nations, inspired by Ethiopia's historic tricolor.

Color symbolism

Flag colors often carry symbolic meaning, though the exact interpretation varies significantly by country and culture. Red frequently represents courage, revolution, or the blood of patriots. Blue commonly evokes peace, the sky, or ocean. Green is associated with Islam, nature, and agriculture. White often symbolises purity or peace. Yellow and gold can represent wealth, the sun, or mineral resources. It is important to note that these associations are not universal — each country assigns its own meaning to its chosen colors, and many flags were designed for purely aesthetic or historical reasons rather than strict symbolic codes.

Unusual flags

Nepal is the only sovereign country in the world whose flag is not rectangular. Its national flag consists of two stacked triangular pennants derived from the ancient pennant flags of Himalayan kingdoms, giving it a distinctive double-triangle silhouette. Switzerland and Vatican City are the only two sovereign states that use a square flag rather than a rectangle. Nepal's flag construction is even specified in the country's constitution as a precise geometric algorithm.