Swedish flag

Sweden

Use	Civil and state flag, civil and state ensign
Proportion	5:8
Adopted	June 22, 1906
Design	A blue field with a yellow Scandinavian cross that extends to the edges of the flag; the vertical part of the cross is shifted to the hoist side. Dimensions: 5:2:9 horizontally and 4:2:4 vertically.
Variant flag of Sweden
Use	War flag and naval ensign
Proportion	1:2
Adopted	Dates back to the mid-1600s. Described in law on November 6, 1663. Current design: June 22, 1906
Design	Blue with a yellow Scandinavian cross that extends to the edges of the flag. Overall ratio, including the tails, is 1:2

The flag of Sweden is the national flag of the Kingdom of Sweden. It consists of a yellow or gold Nordic Cross (i.e. an asymmetrical horizontal cross, with the crossbar closer to the hoist than the fly, with the cross extending to the edge of the flag) on a field of blue. The Nordic Cross design traditionally represents Christianity. The design and colors of the Swedish flag are believed to have been inspired by the present coat of arms of Sweden of 1442, which is blue divided quarterly by a cross pattée of gold, and modeled on the Danish flag. Blue and yellow have been used as Swedish colors at least since King Magnus III's royal coat of arms of 1275.

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 colors 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. 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's recommended that its color scheme should correspond with that of the flag.

The triple-tailed flag (tretungad flagga) is used as a military ensign (örlogsflaggan). Its overall ratio, including the tails, is 1:2. The flag is also used as the Swedish naval jack (örlogsgösen). The jacks are smaller than the ensigns, but they have the same proportions. The Swedish swallow-tailed flag was originally the King's personal emblem, or the emblem representing a command conferred by the King. It was at first two-pointed, but by the mid-17th century, the distinctive swallow-tail-and-tongue appeared. The flag is also flown by the defence ministry, while civil ministries fly square flags.

The Swedish royal flag (Kungliga flaggan) is still identical to the triple-tailed military flag, but usually includes in its center a white field with the greater or the lesser coat of arms with the Order of the Seraphim, which has the King of Sweden as its Grand Master. The King personally decides about the specific use of the royal flag.