Leonardo

Compare colors

Compare two colors to check contrast, difference, and colorblind safety.

Supported formats

Color space Opaque Alpha
HEX #FFFFFF #FFFFFFFF
RGB rgb(255, 255, 255) rgba(255, 255, 255, 1)
HSL hsl(360, 100%, 50%) hsla(360, 100%, 50%, 1)

How this works

Ratings are calculated by first converting the colors to their simulated counterparts. The simulated values approximate the colors that would be seen by fully deficient vision of each particular type. The simulated colors are then compared using the DeltaE 2000 color difference formula. A color difference value of 11 or more is considered passing; anything lower is too similar to distinguish.

The color difference meters visualize the DeltaE value to give reference to how different the colors would appear for each color vision deficiency.

Convert color

Have a lot to convert?

Use the bulk converter to convert all your colors in the formats you need.

Convert bulk

Enter hex colors separated by comma or new line.

Colors will be converted into the selected color spaces and downloaded as a CSV file.