Kelvin Colour Temperature Guide

Find the right colour temperature for any space. Enter a Kelvin value to see its appearance, recommended applications, and how it compares to every common light source — from candlelight to cool daylight.

Common colour temperatures — click to select
1800K
Candlelight
2700K
Warm white
3000K
Soft white
3500K
Neutral white
4000K
Cool white
5000K
Daylight
6500K
Cool daylight
10000K
Blue sky
Or enter any Kelvin value
From fixture spec sheet — 0 to 100

Please enter a Kelvin value between 1000 and 20000.

3000K
Soft white
Colour temperature scale
1800K Warm3000K4000K5500K10000K+ Cool
Common light sources and colour temperatures
TempSourceBest for
CRI — Colour Rendering Index explained
Shop LED lights at this colour temperature on Amazon

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The calculators and tools on LightingCalc.lighting are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. LightingCalc.lighting makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.