The flag of Israel was adopted on 28 October 1948, five months after the establishment of the State of Israel. It depicts a blue hexagram on a white background, between two horizontal blue stripes. The Israeli flag legislation states that the official measurements are 160 / 220 cm. Therefore, the official proportions are 8:11. Variants can be found at a wide range of proportions, with 2:3 being common. The flag was designed for the Zionist Movement in 1891. The basic design recalls the Tallit, the Jewish prayer shawl, which is white with black or blue stripes. The symbol in the center represents the Star of David (Magen David), a Jewish symbol dating from late medieval Prague, which was adopted by the First Zionist Congress in 1897.