The pan-Iranian colours are red, white, and green, and sometimes gold or cyan. They have been used and continue to be used on the flags and banners of many Iranian countries and regions, including Iran, Afghanistan, Tajikistan, and Kurdistan. Rooted in an ancient tradition that became prominent in the Achaemenid Empire, [1] the pan-Iranian colours and the similar patterns in which they are used symbolize the shared origins of the Iranian peoples. [2] [3] [4] [5]
According to the Avesta, the full free population of ancient Iranian society was divided into three classes, each of which was associated with a certain colour: [6]