Check the perceived brightness of any color and whether it needs light or dark text on top.
Check the perceived brightness of any color and whether it needs light or dark text on top.
Luminance = 0.299R + 0.587G + 0.114B
RGB(255,165,0) → Brightness 173.5, use dark text.
Enter your values in the fields above and click "Calculate" to get instant results. All calculations happen in your browser — nothing is sent to any server.
What is Color Brightness Calculator?
Check the perceived brightness of any color and whether it needs light or dark text on top.
What formula does this use?
This calculator uses: Luminance = 0.299R + 0.587G + 0.114B
Is this calculator free?
Yes! All calculators on CalcNest AI are 100% free with no account required.
Is my data safe?
Absolutely. All calculations run locally in your browser. We never store or transmit your input data.