What should be the color temperature of indoor photography?

Indoor photography, the color temperature should be 5000-5500 K.

Color temperature is a physical quantity used to define the color of light source in illumination optics. That is, when a blackbody is heated to a certain temperature, and the color of the light it emits is the same as that of the light source, the temperature at which the blackbody is heated is called the color temperature of the light source, or color temperature for short. The unit is "K" (Kelvin degrees-days).