Lighting Gel Calculator — Colour Correction Filters

Find the right colour correction gel to match or shift your light source. Enter your source and target colour temperatures — or pick a common scenario — to get the exact gel recommendation with Rosco and Lee filter numbers.

Common scenarios — click to load
Daylight to tungsten
5600K strobe to match 3200K room lights
Tungsten to daylight
3200K tungsten to match 5600K daylight
Fluorescent correction
Green fluorescent to match daylight
Match fluorescent
Add green to match fluorescent WB
Simulate golden hour
5600K to warm 2500K sunset glow
Night / moonlight
5600K to cool blue moonlight look
Source and target colour temperature

Please select source and target colour temperatures.

Recommended gel
1/2 CTO
Warms 5600K to 3800K – 0.4 stop light loss
Colour temperature shift
5600K source
->
3200K target
0
Mired shift
0 stops
Light loss
0 sheets
Gel needed
Gel options — closest matches for this shift
Gel nameResult KStop lossAccuracy
Rosco and Lee reference numbers
Source colour temp
Target colour temp
Mired shift required
Best gel match
Residual shift after gel
Fixtures to gel
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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.