- Set your preferred Calculation method under the Settings tab.
(Full version only. Lite version restricts to the less accurate CIE1976 formula.)
- Enter the L, a and b values on the Reference side of the color you are trying to match to.
might be provided by a spectrophotmeter, or known Lab value for a color such as a Pantone swatch.
- Enter the L, a and b values on the Sample side of the color you are comparing.
might be provided by a spectrophotmeter, or known Lab value for a color to determine its similarity to the reference color.
- The Delta of the specified method will display under the color chips.
Delta values less than 1 are generally considered indistinguishable unless the colors are touching.