How to ensure accessible use of color in learning resources and materials aligned to your institution’s brand
A Lightning Talk at UDLHE Digicon 2021
Presenters: Tamsyn Smith and Matthew Deeprose.
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Example brand accessibility matrix
Would you like a brand colour accessibility matrix for your color palette?
We can generate a brand colour accessibility matrix for your color palette. To do so we will need to know:- Create text or CSV (comma separated) file containing the HTML color codes of your brand. Remember to include the color white, it may not be in your official brand, but it is very likely that you use it in your materials.
- If you use 'names' for your colors, include them as shown in the example below.
- Email your text or CSV file to Matt and let him know the name of your institution or brand. The institution or brand name will appear in the title of the page.
- Within a week Matt will send you a zip file containing the HTML files and dataset that you may then use with your colleagues or host on your website. You are free to make any changes you wish to the files, copy them, share them as you like. Here is an example zip file for the University of Southampton accessibility matrix.
#FAFF7F, Medicine yellow
#FF5154, Art pink
#91A6FF, Science blue
#FF0000, Humanities red
#228B22, Biology green
#181818, University black.
Presentation synopsis
Is it possible to be both on brand and accessible? WCAG guides us on making our color choices accessible. We will demonstrate a simple and repeatable solution to share with your colleagues. Our innovative matrix concept will help YOU to determine accessible color combinations within your institutional brand palette.
Many students, such as those who are color blind, may not self-identify as having a disability. Poor use of color in online courses can have a detrimental impact on certain groups of students, including those who are color blind or have a visual impairment. Likewise, most people find vibrating color combinations difficult to read. Appropriate use of color (especially when used to distinguish and organize your content) can benefit everyone and reduce the 'burden' of ‘reasonable adjustments’. However, we design our learning materials, we should ensure that when we use color we do so accessibly.
A constraint that many practitioners must work within is their education institution’s brand color palette, which may not have been chosen with accessibility in mind.
We will share a simple and easy to use approach that can help you use colors accessibly while remaining congruent and consistent with your institution's color scheme.
Links used in the presentation (in order of appearance)
- COVID-19 Highlights the Importance of Digital Accessibility and Inclusion.
- Accessibility must be part of your COVID-19 response.
- In The Middle of A Pandemic, COVID-19 Information Remains Inaccessible to Visually Impaired People.
- The WebAIM Million: An annual accessibility analysis of the top 1,000,000 home pages.
- Accessibility and Me: Joe Banks, Tech Lead at 23andMe.
- Colour Accessibility by Geri Coady.
- Visual impairment and computing - common questions (AbilityNet).
- What is colour blindness?
- Color blindness (Wikipedia).
- Calculating Relative luminance and contrast ratio.
- Color Theory and Contrast Ratios.
- Advanced Perceptual Contrast Algorithm.
- Who can use?: this site checks the contrast of two colours and returns a result. It also shows how this colour choice has an impact on visual impairments and situational impairments.
- WCAG: Understanding Success Criterion 1.4.11: Non-text Contrast.
- WCAG: Understanding Success Criterion 1.4.3: Contrast (Minimum).
- WCAG: Understanding Success Criterion 1.4.6: Contrast (Enhanced).
- 5 Methods to Achieve Visual Consistency in eLearning.
- PDF version of University of Southampton Brand color accessibility matrix.
- Web based version of University of Southampton Brand color accessibility matrix.
- Draft web based accessibility matrix for Appalachian State University brand colour palette.
- Draft web based accessibility matrix for York University brand colour palette.
Further resources
Why is Colour Contrast important?
- Accessibility 101: Color Contrast.
- Color Contrast And Why You Should Rethink It.
- What is colour contrast accessibility? 5 questions and answers..
- Colour Accessibility.
- Contrast and Color Accessibility.
Useful tools
- Use "Who can use.com" to find out the contrast of two colours and how this impacts those with visual impairments.
- PowerToys for Windows 10 has a fantastic colour picker tool, this helps you identify colour codes.
- How pick colour codes on a Mac.
- Convert RGB colour codes to HTML/Hex colour codes.
- Convert HTML/Hex colour codes to RGB colour codes.
- "Color Safe": Find accessible colours that contrast with a specific colour you wish to you.
- "tanaguru contrast finder": Find good constrasts, for web accessibility, between two colours you specify.
- ColorBox can help you to design a new accessible colour palette. This explanatory blog post is useful to read first.
- Find the Perfect Contrast Between Light Text and a Background Image.
Learn more about digital accessibility
- WCAG 2.1.
- WCAG 2.2 (working draft available).
- WCAG 3.0 (first draft available).
- Advanced Perceptual Contrast Algorithm (new contrast measurement used in WCAG 3.0).
- Levels of WCAG Conformance.
- 10 Days of a11y by Lindsey Kopacz.
- Accessibility with Lindsey.
- Laura L. Carlson's weekly newsletter with selected links to new Accessibility and CSS content from around the web.
- Microsoft Inclusive Design Toolkit.
- Web Accessibility checklist.
- Accessibility section of the Mozilla Developer Network.
February 2021