distinguishing elements in a graph with only differently coloured lines.showing required form fields in another colour without any other indication, such as an asterisk.indicating errors simply by highlighting them in red.displaying links in a different colour, but not providing any other visual cues, such as an underline.If colour is the only way that specific information is provided, then this information won’t be available to users who are unable to see or easily differentiate between colours.Įxamples of conveying information by colour alone include: Success criterion 1.4.1 requires that colour “is not used as the only visual means of conveying information, indicating an action, prompting a response, or distinguishing a visual element.”
WCAG 2.1 success criterion 1.4.1 - Use of colour This includes 3 WCAG 2.1 success criteria related to the use of colour: Web Content Accessibility Guidelines (WCAG) 2.1 New Zealand Government Web Accessibility Standard The New Zealand Government Web Accessibility Standard requires that web pages conform to the Web Content Accessibility Guidelines (WCAG) 2.1.
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It’s important to consider how you use colour in your online content (web pages, PDFs, or other online material) to ensure that people with colour blindness, colour vision deficiencies, partial sight or low vision, can access all the information in that content.
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