Flags and arms of Aargau

The flag and the coat of arms of Aargau (German: Fahne und Wappen des Kantons Aargau) was adopted in 1803 after the Act of Mediation by the newly-created Canton of Aargau, to a design by Samuel Ringier-Seelmatter. After some minor variations the design was further defined in 1930.

The flag, reflecting the arms, is divided into two parts: the left side is black with a central white wavy band; the right side is blue with three five-pointed stars.

The 1803 proposal did not explain the design, which differed in minor detail from the present one.