Flag of Sweden color yellow
State flag and civil ensign
The dimensions of the Swedish flag are 5:2:9 horizontally and 4:2:4 vertically. The dimensions of the Swedish flag with a triple-tail are 5:2:5:8 horizontally and 4:2:4 vertically. The colours of the flag are officially established through the Natural Color System to be NCS 0580-Y10R for the shade of yellow, and NCS 4055-R95B for the shade of blue. They are also specified to Pantone PMS 301 C/U for blue and PMS 116 or PMS 109 U for yellow. The square-cut Swedish state flag is identical to the civil ensign. The Swedish law does not regulate the design of the Swedish pennant, but it is recommended that its colour scheme should correspond with that of the flag.Early history
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". As stipulated in a royal warrant of 1569, the yellow cross was always to be borne on Swedish battle standards and banners. Prior to this, a similar flag appeared in the coat of arms of King John III's duchy, which is today Southwest Finland. The same coat of arms is still used by the province.Colour change in 1906
Following the dissolution of the union in 1905, the triple-tailed naval ensign also became the Swedish naval jack, replacing the common naval jack, and the Flag law of 22 June 1906 further regulated the use and design of the flag, specifying the colours to be "ljust mellanblå" (light medium blue) and "guldgul" (golden yellow), a departure from the previously darker shade of blue. The Swedish state flag became identical to the square-cut civil ensign, and all private use of the triple-tailed ensign was prohibited.
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