The design of the flag has not changed since Jordan achieved independence in 1946. Its form and colours are derived from the flag of the 1916 Great Arab Revolt. Black, white and green refer to the Arab Islamic dynasties: Umayyad, Abbasid and Fatimid. The red triangle connecting the flag's green, white and black panels represents the Hashemite Family. The heptagonal star represents the first seven verses of the Quran, Sura Al Fatiha, which are recited in every prayer.
In the Jordanian Constitution, the specifications of the Jordanian flag are outlined in Article Four: Its length is twice its width, and it is horizontally divided into three equal parallel sections: an upper section of black, a middle section of white and a lower section of green. The side of the flag attaching to the mast forms the base of a red, perpendicular equilateral triangle. The base is equal to the flag's width and its height equals half of the flag's length. Within this triangle is situated a white heptagonal star, the area of which could be contained in a circle whose diameter is one-fourteenth of the flag's length; it is centred at the intersection of the triangle's angles, so that the axis passing through one of the vertices parallels the base of the triangle.