What is the meaning of photographic color temperature?

Photographic color temperature is a description of the tone of a photo. In the camera, we can use white balance to adjust the color temperature of the photo. Generally speaking, cameras provide six or more white balance presets so that photos can display various colors. Due to the different light sources, the color temperature of the photo will be cold and warm. Generally, the color temperature of natural light will be around 4500 K. The higher the value, the colder the photo will be, and the lower the value, the warmer the photo will be. The function of color temperature is to analyze the content of different color components in light, and its unit is "K". Common color temperatures range from 1000 to 17000 K, for example, the color temperature of candlelight is around 2000K, the color temperature of tungsten lamps used at home is around 2800~3200K, the color temperature of beautiful sunrise and sunset is around 3400K, the sunlight at noon is around 5400K, the cloudy day is around 6200K, and the blue sky is around/kl. Conversely, the higher the color temperature, the more blue components of light, and the colder it feels.