The temperature of the surface of the star is different, and the color of the light it emits is different. For example, the surface temperature of stars emitting white light is very high, reaching more than 11500 degrees; the stars emitting red light have a surface temperature of 2600-3600 degrees;

Blue-emitting stars with a surface temperature of 25,000-40000 degrees. The surface temperature of the sun is 6000 degrees and looks yellow.