Republic of Lao People's Democratic Republic A blue flag, the red, white and crescent. The center of the flag. The width of the flag is equal to two thirds of the length, width, edge red stripes on each side half of the blue. Circular white and wide as four-fifths of the width of the blue. This flag is called in Lao Duang Duen that the flag was designed during World War 2 by King Silas Weerawong's the great philosopher Lao.