The auxiliary color can be the color on the standard color scale. According to the relevant information of the query, the standard color is the most basic color composition, and most of them are high-purity colors, while other auxiliary colors are the harmonic colors of a certain color added to the basic color of the original reason, that is, auxiliary colors. They are all red tones, and no matter how they are matched, they give the impression of warm tones, so the auxiliary colors can be the colors on the standard color scale.