![]() While there is nothing wrong with the red or green text, if the only way to determine what is good or bad information is indicated by color choices, this represents a failure of the WCAG 2.0 Criterion 1.4.1 requirements, where color cannot be the only means to convey the different meaning of the text. A simple example that is commonly used by authors is to use green text to indicate good information and red text to indicate negative information. What this does mean is that you cannot use color alone to represent important information, determine a response or to represent a visual content. What does this mean in plain English? It is straightforward as there is no actual restriction in the use of a color in a document, with the exception that some colors may not be a good choice when we discuss proper contrast. “Color is not used as the only visual means of conveying information, indicating an action, prompting a response, or distinguishing a visual element.” The WCAG 2.0 Criterion 1.4.1 states the following regarding use of color: Color Considerations for Accessible Designs The WCAG 2.0 standards address both issues and it is probably best to start there when laying out the requirements for proper use of color and contrast. STEP 3: COLOR & CONTRAST Color and Contrast Best Practices for AccessibilityĪs part of our series of articles on what is required to ensure PDF documents are accessible, we will be discussing color and proper contrast. Facts and Figures on Adults with Vision Loss | American Foundation for the Blind (afb.This is the third in an eight-part article series.Color Blindness Facts & Statistics: Prevalence ().There are a variety of tools to help you compute the color contrast for the specific colors you use. ![]() The W3C Web Content Accessibility Guidelines requirement 1.4.3 requires a minimum contrast ratio of 4.5:1 for standard size text and a ratio of 3:1 for large text. Color blindness is much more prevalent in men than women, with about 1 in 16 men having some type of color blindness.According to estimates from the 2018 National Health Interview Survey, 32.2 million American Adults age 18 and older reported experiencing vision loss.Presenters might use this video as a part of their accessibility training.Individuals might use this video to raise awareness in their department for a disability awareness event.Instructors might include this video as a part of a course and ask students to test webpages for color contrast compliance. ![]() Here are some suggestions on using this video: The following informational video on Color Contrast will help you understand the importance of color choices in creating documents, assignments, reports, announcements, and web pages. Authors need to make sure there is enough contrast between the foreground and background colors (ratio) of text content in documents and web pages. When it comes to accessibility, colors that look good together may not be easily seen by those with visual impairments or color blindness. Use a color contrast checker like the Paciello Group’s color contrast analyzer to ensure accessible color combinations.įor more information, go to go./lighthouse-color-contrast.Ĭolor Contrast Video is hosted on Illinois Media Space and was created by Tim Yang as part of the Illinois Lighthouse Project. So what works for you may not work for others. Keep in mind that color contrast thresholds differ between people. This is just a sample paragraph but with very low color contrast. By paying attention to color contrast, accessible content.įor example, how easily can you read the following text?
0 Comments
Leave a Reply. |