Color contrast
Also need the HSV instead of HSL http://drpeterjones.com/colorcalc/ http://www.had2know.com/technology/color-contrast-calculator-web-design.html http://contrast-a.dasplankton.com/ http://www.google.com/#sclient=psy&hl=en&source=hp&q=calculate+contrast+color&pbx=1&oq=calculate+contrast+color&aq=f&aqi=g1&aql=&gs_sm=e&gs_upl=4743l13042l0l13447l24l23l0l6l6l1l406l3558l1.8.7.1.1l18l0&fp=1&biw=1280&bih=912&bav=on.2,or.r_gc.r_pw.&cad=b RGB difference RYB red 0 0 0 red […]
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