color contrast for accessibility

New Here ,
Jul 03, 2019 Jul 03, 2019

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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?

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Standards and accessibility

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Engaged ,
Jul 03, 2019 Jul 03, 2019

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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.

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New Here ,
Jul 11, 2019 Jul 11, 2019

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Bevi---

This is very helpful----thanks.

- michael

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New Here ,
Apr 21, 2021 Apr 21, 2021

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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. 

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Adobe Community Professional ,
Apr 21, 2021 Apr 21, 2021

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This (free) software should be mandatory on all computers : https://www.colororacle.org/

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