The flag of Israel was officially adopted on 28 October 1948. It is a white banner with three blue (tekhelet) symbols: a pair of horizontal tallit-like stripes above and below a centred Star of David. Relevant Israeli legislation describes the flag's dimensions as 160 cm (63 in) by 220 cm (87 in), thereby fixing the proportion to a ratio of 8:11. But variants can be found at a wide range of proportions, with 2:3 also common.
The symbols' colour is generically described as "dark sky-blue" and may differ from flag to flag, ranging from pure blue (sometimes shaded almost as dark as navy blue) to hues about 75% toward pure cyan and shades as light as very light blue.