I am porting a document from MS Word 13 into a PDF. I converted it to PDF from Word and am running Acrobat Pro. I need the document to be 508 compliant but when I run "Full Check" on the "Accessibility" panel, it flags the document with a "Color Contrast" error. The document is only one page, using 11 point Arial solid black text (r,g,b = 0,0,0) on a plain white background with no graphics. I tried correcting the issues by playing with the settings under "Edit > Preferences > Document Colors Options". The error still will not clear. Any suggestions?
Is the checker telling you "Color contrast - Needs manual check"? If so, this is not an error, just a friendly reminder. Color contrast, along with correct reading order and many other accessibility factors, cannot be reliably machine-checked and requires knowledgeable human inspection. Passing the Acrobat accessibility checker is a great first step, but should never be confused with 508 compliance.
For human inspection of color contrast, a great tool is the Colour Contrast Analyser from the Paciello Group (https://developer.paciellogroup.com/resources/contrastanalyser/)
For reading order and other accessibility factors that required human inspection, a great tool is the Screen Reader Preview built into PAC3 from Access for All (https://www.access-for-all.ch/en/pdf-lab/pdf-accessibility-checker-pac/downloading-pac.html)
Both of these tools are free.
This is very helpful----thanks.
The color contrast - check manually does warrant a further check if you are trying for government level (Section 508) compliance. There is an add on that only checks color contrast. I've had to deal with this a few times lately, and even though the PDF was approved by the in-system checker, it failed the 508 compliance for contrast.