Color Brightness Calculator
Calculate relative luminance and perceived brightness of colors
Color Input
Sample
Brightness Level: Medium
Brightness Calculations
Relative Luminance
0.2126
WCAG standard (0-1)
Perceived Brightness
139
Scale 0-255
Contrast with White
4.00:1
Higher is better
Contrast with Black
5.25:1
Higher is better
Recommended Text Color
#000000
Black text recommended