Chinese traditional blue

Quick answer：

Chinese traditional blue refers to the various shades of blue used in traditional Chinese art and culture. It is a color that symbolizes tranquility, wisdom, and immortality. Common traditional blues include Yǐn Shuǐ (indigo), Cí Hóng (cinnabar blue), and Qīng Shuǐ (greenish blue). These blues are often used in painting, calligraphy, and ceramics.