How much k can the color temperature of the lamp be adjusted in general?

I am answering questions about the application of lamps in daily life. The color temperature of lights in our life is generally 2700K-7000K, and there are at most three color temperatures (not only these three, but also other color temperatures in the range), 3000K (warm white light), 4000K (positive white light) and 6500K (cold white light).

Color temperature range

? (Image from the Internet)

The color temperature and color change can be observed intuitively and carefully in the above picture. In fact, the color temperature of light can directly affect the spatial presentation effect.

For example, our living room is the core of family activities and a place to entertain guests. Generally, light sources with low color temperature (2700K-3000K) are used, which helps to highlight the decoration style and create a warm atmosphere. However, it should also be noted that the current lighting design generally adopts the main light design, and the color temperature of various lamps in the living room should be unified. For example, choose 3000K LED downlight, and choose 2700K-3000K warm color temperature for chandelier, light strip and wall lamp.

Similarly, lamps in our kitchen, bedroom, study room, cloakroom and other areas should also choose a unified color temperature. For example, the color temperature in the kitchen area should use a lamp with a high color rendering index of 3000K, which will help the color of food to be more in place and make people drool!

Therefore, different color temperatures also have a certain impact on people's mood. According to the analysis, patients with depression should not live in an environment with a color temperature above 4000K for a long time, and long-term use of a color temperature above 6500K may lead to macular degeneration in human retina. Considering comprehensively, it is most suitable to choose a lamp with a color temperature of 3000K ~