The Irish flag , also known as the tricolour or the Irish national flag , symbolises Ireland and its people. It is a vertical tricolour flag of green, white, The flag of Ireland , also known as the Irish tricolor, consists of three equal vertical bands of green, white, and orange. The green color represents the Gaelic tradition of Ireland , the orange symbolizes the followers of William of Orange in Ireland , and the white in the center signifies the aspiration for peace between them. Discover the symbolism behind the Irish flag's colors, explore its coat of arms, flag map, and see flags that share its design. Celebrate Ireland 's heritage! Learn about the origin and symbolism of the Irish tricolour, the official flag of the Republic of Ireland . Discover how it differs from the Union Jack and the Ulster Banner, and see some similar flags around the world.