A 3D Model Of the South Korean Flag on double and single spiral structure of different extensions The colors of the flag are red, blue, and black on a white background. The flag stands for the three components of a nation: the land (the white background), the people (the red and blue circle), and the government (the four sets of black bars or trigrams). the Republic of Korea is a country in East Asia. It constitutes the southern part of the Korean Peninsula and borders North Korea