The flag of Vietnam consists of a rectangular red background with a five-pointed yellow star in the center. The aspect ratio of the flag is 2:3. The geometric properties of the flag are that it is a rectangle with a centered star. The red color code is #FF0000 and the yellow color code is #FFFF00. The star has a diameter of three-fifths the height of the flag and its five points each form an angle of 36 degrees with its neighboring points.