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Color Temperature

Color Temperature

Color Temperature of Light Bulbs

 

Definition of Color Temperature

 

The color temperature is a measurement that is used to define the color of a light source. This is also used to indicate the ‘whiteness’ or ‘warmness’ of a light source.

EagleLight LEDs are available in many levels of Kelvin color temperature. The descriptions used in this site for color temperature typically conform to the following:

  • Warm White: 2700-3500 Kelvin: typical incandescent lightbulb
  • Natural White: 4000-4500 Kelvin: typical retail space ‘white’ fluorescent lighting
  • Day White: 5000-6000 Kelvin: used for high color definition - typical noon day sun in many parts of the world
  • Cool / Commercial White: 6000-7000 Kelvin: used in many industrial and commercial application

Examples of Color Temperature
The following table offers a broader example of the types of color temperature:
Color Temp: Example of source
1900K : Candle light or sunlight at sunrise or sunset
2000-2700K: Often used as accent lighting to blend in with fluorescent 2700K applications.
3000-3200K: Used as a primary light source for retail applications.
3700K : Coated lamps. Used where a "softer" metal halide light source is desired.
4000K : Used in general lighting; factories: parking lots, warehouses
5000-5500K: Daylight lamps: horticulture, aquariums, high color definition.
5600K : Nominal sunlight (mid day during mid summer)
6000K :  
Starts to get a blue tint like some automotive headlights

 

For the scientists: The color temperature of light is typically measured in degrees Kelvin or just Kelvin. This scale designates the light sources spectral distribution. The Kelvin scale is a temperature that is on the Celsius scale where 0 degrees Kelvin = -273 degrees Celsius. The Kelvin is the light emitted from a black body energy source at that given temperature.