Analyze color contrast between multiple colors, up to 50 colors total, in tons of formats. Hex, RGB and RGBA, HSL and HSLA, CSS Named Colors, HSB, HWB, Lab, LCH, Oklab, Oklch, and CMYK are fully supported. CSS syntax is also accepted color: #FFF or background-color: rgb(255, 0, 0);. More details and specifications are included in the help documentation.
color: #FFF
background-color: rgb(255, 0, 0);
from, calc(), and color() are not supported. Labels can be added to a color by placing the label before a colon, like link: #2C5491
from
calc()
color()
link: #2C5491