Why are the roof tiles yellow in the Forbidden City?

Yellow tiles were reserved for use on the roofs of royal palaces, mausoleums, imperial gardens, and temples. This, it is said, was because yellow is the color of the Yellow River, once believed to be the cradle of the Chinese civilization.

The main colors of the Forbidden City are yellow and red. The walls, pillars, doors, and windows were mostly painted red. Which is regarded as a symbol of good fortune, and happiness in Chinese culture. During the Ming and Qing dynasties. Yellow was a symbol of supreme power and was only used by the imperial family.