The colors are derived from the Swedish national arms—gold crosses on a blue field. The Nordic Cross design represents Christianity, a pattern shared by all Scandinavian nations.
History
The flag's exact origins are debated, but it has been in use since the 16th century, likely inspired by the Danish flag (Dannebrog). It became the official flag of the state after Sweden's union with Norway ended in 1905.
Construction
A 5:8 ratio featuring a yellow, off-center Nordic Cross on a blue field. The vertical arm is shifted toward the hoist side.
Finland
Norway
