Color temperature

The color temperature of a bulb is measured in kelvins (K). The lower the number of kelvins, the yellower the light. The higher, the bluer the light.

Same wattage, same number of lumens, different atmosphere

Cool lighting (functional) 13 W – 850 lm – 4,100 K Whiter light with bluish tint

Warm lighting 13 W – 850 lm – 2,700 K Yellower light, similar to incandescent

Practical tips

• Packaging generally features words such as soft white, warm white, cold white and daylight.
  
  
• To reproduce the atmosphere of incandescent lighting, choose soft or warm white.
  
  
• If you prefer functional lighting, choose cool white. Many people find it suitable for the kitchen, reading area, workshop or basement, for instance.