Aargau Flag

The flag of Aargau is a distinctive horizontal bicolor of black over blue. In the center of the flag, a wavy white band separates the two colors, creating a unique and recognizable design. This central element is a key visual feature that distinguishes it from other simple bicolor flags.

The flag's proportions are officially set at 1:1 for the square cantonal version, though a rectangular version for general use is also common. The design is notable for its clean and modern aesthetic, achieved with just three colors and a single, flowing graphic element. Its simplicity makes it highly visible and easily reproducible.

As the state flag of one of Switzerland's 26 cantons, it is flown on public buildings and used in official contexts throughout the region. The flag's design is a direct representation of the canton's geography and history, making it a meaningful symbol for its residents.

The flag's colors and symbols are deeply tied to the canton's identity. The black and blue fields represent the historical regions that united to form the modern canton. The wavy white band is a direct and literal symbol for the Aare River, from which the canton derives its name.

This central, flowing line symbolizes the vital importance of the river to the region's development, agriculture, and transportation. The combination of these elements creates a flag that is both a simple heraldic device and a clear geographic reference, encapsulating the canton's essence in a minimalist design.

The current flag was officially adopted in 1803, following the Act of Mediation that reorganized the Swiss Confederation after the Napoleonic era. This act led to the creation of the canton of Aargau from several previously separate territories.

The flag's design was chosen to symbolize this new union. It successfully combined the heraldic colors of the two main historical regions: the black of the County of Baden and the blue of the Freie Ämter, with the Aare River as a unifying element between them. The design has remained unchanged since its adoption over two centuries ago.