Flag of Sweden cross pattée. Other historians claim that the Swedish flag was blue with a white cross before 1420, and became blue with a golden cross only during the early reign King Gustav I, who deposed King Christian II in 1521. The exact age of the Swedish flag is not known, but the oldest recorded pictures of a blue cloth with a yellow cross date from the early 16th century, during the reign of King Gustav I. The first legal description of the flag was made in a royal warrant of 19 April 1562 as "yellow in a cross fashioned on blue".
Flag of Sweden 1905, stipulated the exclusion of the union mark as of 1 November 1905. On 1 November 1905, the triple-tailed flag also became the Swedish naval jack. The Flag law of 22 June 1906 further regulated the use and design of the flag, notably was a lighter blue colour than was used before. The Swedish state flag became identical to the square-cut civil ensign, and all private use of the triple-tailed flag was prohibited. When used from a standalone flagpole, the size of the flag is recommended to have a width equaling a fourth of the height of the pole. When