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October 07, 2022

What is color temperature? What does the color temperature K of LED light mean?

Color temperature is a measure of the light color of a light source. It was originally determined by Kelvin. So the name of Kelvin is used as the unit of measurement, and the letter K is used as the symbol, and the unit is K.


Physically, it is expressed in absolute temperature K, that is, the standard blackbody is heated up, and when the temperature rises to a certain degree, the blackbody color begins to change gradually from dark red-light red-orange-yellow-white-blue. When the color of a light source is the same as that of a black body, we call the absolute temperature of the blackbody the color temperature of the light source.


The color of the light source you see varies with different viewers and other conditions, such as the environment, objects, lighting, and weather conditions. Color temperature is a measure of the absolute black body source contrast between the color of the light source and the theory of radiant energy, measured in Kelvin degrees. The lower the value, the stronger the red, the higher the value, the stronger the blue.


light color



1. Warm light

The color temperature of warm light is below 330K. Warm light is similar to incandescent light. There are more red light components, which can give people a warm, healthy and comfortable feeling. Suitable for home, residence, dormitory, Hotel and other places or places with low temperature.

2. White light

White light, also known as neutral color, has a color temperature between 330K and 5300K. The neutral color is due to the soft light, which makes people feel happy, comfortable and serene. Suitable for shops, hospitals, offices, restaurants, restaurants, waiting rooms and other places.

3. Cool white light

Cold white light, also known as sunlight, has a color temperature of more than 5300 K. The light source is close to natural light and has a bright feeling, which makes people concentrate. Suitable for offices, conference rooms, classrooms, drawing rooms, design rooms, library reading rooms, display windows and other places.


light brightness



Color of light at different color temperatures:

1. Low color temperature: color temperature below 330K, the light color is red to give a warm feeling; Have a steady atmosphere and a warm feeling; When illuminated with low color temperature light source, it can make the red more vivid.

2. Medium color temperature: the color temperature is in the middle of 3000-6000K, people have no particularly obvious visual and psychological effect in this color, and have a refreshing feeling; So it is called neutral color temperature. When illuminated with a medium color temperature light source, the blue color feels cool.

3. High color temperature: The color temperature exceeds 6000K, and the light color is bluish, which gives a sense of coldness. When illuminated with high color temperature light source, the object feels cold.


The above content is provided by WOSEN. WOSEN is a professional manufacturer and supplier of Led Flood Light, Led Street Light, Led Solar Light, etc. For more information, please visit https://www.wosenled.com/ or contact admin@wosenled.com or WhatsApp +86-13425434349


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