APCA Contrast CalculatorClick on a color patch next to "Text" or "Background" above to use the HTML5 color-picker (modern browsers). Otherwise enter color values in the text-box as a three or six digit hex value, the '#' is not necessary. Other valid entries are integer rgb(r,g,b) or an HTML color name (see bottom of page for list). PROBLEMS? Try a "Forced Reload" on your browser, and/or clear the cache. This is the APCA
