Color Contrast Analyzer

foreground color: #

background color: #

Hello World!

LumFG = LumFB = (0.2126 * R) + (0.7152 * G) + (0.0722 * B)

LumBG = LumBG = (0.2126 * R) + (0.7152 * G) + (0.0722 * B)

Contrast ratio = CR = (L1 + 0.05) / (L2 + 0.05)

Contrast ratio is >= 7, contrast is sufficient.

Contrast ratio is < 7, constrast is not sufficent.

R = R =

( RsRGB <= 0.03928 )
? RsRGB /12.92
: ((RsRGB +0.055)/1.055)2.4

G = G =

( GsRGB <= 0.03928 )
? GsRGB /12.92
: ((GsRGB +0.055)/1.055)2.4