▁are ▁ 5 : 2 : 5 : 8 ▁hor izont ally ▁and ▁ 4 : 2 : 4 ▁vert ically . ▁The ▁colors ▁of ▁the ▁flag ▁are ▁officially ▁established ▁through ▁the ▁Natural ▁Color ▁System ▁to ▁be ▁N CS ▁ 0 5 8 0 - Y 1 0 R ▁for ▁the ▁sh ade ▁of ▁yellow , ▁and ▁N CS ▁ 4 0 5 5 - R 9 5 B ▁for ▁the ▁sh ade ▁of ▁blue . ▁They ▁are ▁also ▁specified ▁to ▁P ant one ▁P MS ▁ 3 0 1 ▁C / U ▁for ▁blue ▁and ▁P MS ▁ 1 1 6 ▁or ▁P MS ▁ 1 0 9 ▁U ▁for ▁yellow . ▁The ▁square - cut ▁Swedish ▁state ▁flag ▁is ▁identical ▁to ▁the ▁civil ▁en sign . ▁The ▁Swedish ▁law ▁does ▁not ▁reg ulate ▁the ▁design ▁of ▁the ▁Swedish ▁p enn ant , ▁but ▁it ▁is ▁recommended ▁that ▁its ▁color ▁scheme ▁should ▁correspond ▁with ▁that ▁of ▁the ▁flag . ▁ ▁Military ▁en sign ▁ ▁The ▁triple - ta iled ▁flag ▁() ▁is ▁used ▁as ▁a ▁military ▁en sign ▁( ). ▁Its ▁overall ▁ratio , ▁including ▁the ▁t ails , ▁is ▁ 1 : 2 . ▁The ▁flag ▁is ▁also ▁used ▁as ▁the ▁Swedish ▁naval ▁jack ▁( ). ▁The ▁j acks ▁are ▁smaller ▁than ▁the ▁en sign s , ▁but ▁they ▁have ▁the ▁same ▁proport ions . ▁The ▁Swedish ▁sw allow tail ▁flag ▁was ▁originally ▁the ▁King ' s ▁personal ▁em blem , ▁or ▁the ▁em blem ▁representing ▁a ▁command ▁con ferred ▁by