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2. Color temperature - Wikipedia

   en.wikipedia.org/wiki/Color_temperature

   The temperature of the ideal emitter that matches the color most closely is defined as the color temperature of the original visible light source. The color temperature scale describes only the color of light emitted by a light source, which may actually be at a different (and often much lower) temperature. [1] [2]

3. Light-emitting diode - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode

   Doing so retains the extremely tunable color of RGB LED, but allows color rendering and efficiency to be optimized when a color close to white is selected. [36] Some phosphor white LED units are "tunable white", blending two extremes of color temperatures (commonly 2700K and 6500K) to produce intermediate values.

4. Correlated color temperature - Wikipedia

   en.wikipedia.org/wiki/Correlated_color_temperature

   [3] [4] [5] In practice, light sources that approximate Planckian radiators, such as certain fluorescent or high-intensity discharge lamps, are assessed based on their CCT, which is the temperature of a Planckian radiator whose color most closely resembles that of the light source. For light sources that do not follow the Planckian distribution ...

5. Template:Color temperature white points - Wikipedia

   en.wikipedia.org/wiki/Template:Color_temperature...

   LED-B1 0.4560: 0.4078 2733 phosphor-converted blue LED-B2 0.4357: 0.4012 2998 phosphor-converted blue LED-B3 0.3756: 0.3723 4103 phosphor-converted blue LED-B4 0.3422: 0.3502 5109 phosphor-converted blue LED-B5 0.3118: 0.3236 6598 phosphor-converted blue LED-BH1 0.4474: 0.4066 2851 mixing of phosphor-converted blue LED and red LED (blue-hybrid ...

6. Color rendering index - Wikipedia

   en.wikipedia.org/wiki/Color_rendering_index

   Researchers use daylight as the benchmark to which to compare color rendering of electric lights. In 1948, daylight was described as the ideal source of illumination for good color rendering because "it (daylight) displays (1) a great variety of colors, (2) makes it easy to distinguish slight shades of color, and (3) the colors of objects around us obviously look natural".

7. High-CRI LED lighting - Wikipedia

   en.wikipedia.org/wiki/High-CRI_LED_lighting

   CRI is calculated from the differences in the chromaticities of eight CIE standard color samples (CIE 1995) when illuminated by a light source and by a reference illuminant of the same correlated color temperature (CCT), commonly measured in kelvins, indicating the light color produced by a radiating black body at a certain temperature; the smaller the average difference in chromaticities, the ...