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Contrast Calculator
For maximum readability, ADA guidelines require that copy characters contrast with their background by at least 70%. The contrast calculator may be used to assure accordance with this directive.
Cannot display contrast calculator.Please upgrade your flash player to Flash 7. |
Choose a text color from the selection left. Choose a laminate (background) from the selection at right. A contrast value will appear at center in conjunction with a Contrast = [(Y1-Y2)/Y1] x 100 Where Y1 = light reflectance value (LRV) of the lighter area and Y2 = light reflectance value (LRV) of the darker area. ADAAG Section A.4.30.S Finish and Contrast
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or an 
indicating a contrast level in accordance with or in violation of the guideline. 
