Flag of Greece Flag of Greece The national flag of Greece, popularly referred to as the "sky-blue - white" or the "blue-white" (), officially recognised by Greece as one of its national symbols, is based on nine equal horizontal stripes of blue alternating with white. There is a blue canton in the upper hoist-side corner bearing a white cross; the cross symbolises Eastern Orthodox Christianity, the established religion of the Greek people of Greece and Cyprus. The blazon of the flag is "Azure, four bars Argent; on a canton of the field a Greek cross throughout of the second." The official flag ratio
Flag of the Greek Orthodox Church of the Byzantine Empire. The double-headed eagle was historically used as an emblem in the late Byzantine period (14th–15th centuries), but not on flags; rather it was embroidered on imperial clothing and accoutrements by both the Palaiologos emperors of the Byzantine Empire and the Grand Komnenos rulers of the Empire of Trebizond, descendants of the Byzantine imperial family of the same name. The actual flag of the Palaiologan-era Byzantine Empire was based on the tetragrammatic cross in gold on a red background. This design also forms the basis for another flag used by the Orthodox Church of Greece, with the