C Color Temperature

Color temperature is an objective measure of colors of light sources which are expressed in the unit of absolute temperature (K: Kelvin). Light sources with lower color temperatures appear more reddish, while light sources with higher color temperatures appear more bluish.

Red

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Blue

3000

4000

5000

6000

8000

 

 

10000 [K]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Section Reference

1 2 3 4 567 8 9 0 a

1

Sodium-vapor lamps: 2700K

7

Flash: 5400K

2

Incandescent/

8

Cloudy: 6000K

Warm-white fluorescent: 3000K

9

Daylight fluorescent: 6500K

3

White fluorescent: 3700K

0

High temp. mercury-vapor: 7200K

4

Cool-white fluorescent: 4200K

a Shade: 8000K

 

 

5Day white fluorescent: 5000K

6Direct sunlight: 5200K

E30