What color is the fish belly?

A color between white and light pink. Fish belly color, also called fish belly white, is a traditional color in China, which is similar to fish belly color because it is between white and light pink. In some scenes, the color of fish-belly white can also refer to the eastern sky at dawn, and the color of the sky on rainy days is also fish-belly white. When the sun is about to set, the first contact between light and the sky will also appear as a fish-belly grey.