Graphs, charts, and infographics are powerful tools for visualizing data, but their effectiveness can be hindered when accessibility considerations are overlooked. In an era that prioritizes inclusivity, it's essential to ensure that individuals with varying abilities can comprehend and interpret visual information. In this article, we will explore the significance of graph, chart, and infographic accessibility, offering insights into best practices and techniques to create visualizations that create equal access for all users.

Alternative Text and Descriptive Titles

Alt Text for Graphs and Charts

Just as with images, providing alternative text for graphs and charts is critical for accessibility. Alt text should succinctly describe the content and purpose of the visualization, allowing screen readers to convey the information to users who use assistive technology.  In most cases graphs, charts, and infographics use a special kind of alt-text called a long description alt-text.  This version of alt-text allows you to convey as much meaning as you need to provide the text equivalent for our chart, graph, or infographic.

Descriptive Titles

Assign descriptive and informative titles to your graphs and charts. This title is often embedded in the document or as part of the image, provides context and understanding for all users, including those who may not be able to visually interpret the data, individuals with a cognitive disability or even those who are stressed or are  just tired.

Color Contrast and Patterns

High Contrast Color Schemes

Choose color combinations with sufficient contrast to ensure readability for individuals who may be color blind. Avoid relying solely on color to convey information, as some users may not be able to perceive certain hues or shades of a specific color.  It is often best practice to use colors from across the color wheel to help users visually be able to distinguish colors.

Utilize Patterns and Textures

It is highly encouraged that you incorporate a pattern or texture in addition to using color to differentiate data sets or elements within the graph, chart, or infographic. This provides a redundant way for users to distinguish between various components, enhancing accessibility for those who may have difficulty perceiving colors.

Data Labels and Legends

Clear Data Labels

Ensure that data points are labeled clearly. Use both visual cues and text labels to convey the values represented by each point on the graph. This practice assists users, including those with cognitive disabilities or those who are stressed and tired, in understanding the data without relying solely on visual elements more quickly.

Accessible Legends

If your graph includes a legend, make it accessible by providing clear and concise descriptions. Avoid using color alone in legends and ensure that the information is presented in a format compatible with screen readers.

Interactive Features and Screen Reader Compatibility

Interactive Elements

When incorporating interactive elements, such as tooltips or zoom features, ensure that they are accessible. Provide keyboard navigation options and make interactive content compatible with screen readers to guarantee a seamless user experience for all.  For assistance with this contact the CACS team or you web administrator.

Responsive Design for Various Devices

Responsive Layouts

Design graphs, charts, and infographics with responsiveness in mind to accommodate users on different devices and screen sizes. Ensure that the visualizations maintain clarity and coherence, regardless of whether they are viewed on a desktop computer, tablet, or smartphone.

Conclusion

Incorporating accessibility features into graphs, charts, and infographics is not just about compliance; it's about making information universally accessible and fostering an inclusive digital environment. By prioritizing alternative text, color contrast, data labels, interactive features, and responsive design, designers and developers can contribute to creating visualizations that are not only visually appealing but also comprehensible to individuals in all walks of life. Embracing graph, chart, and infographic accessibility enhances the overall user experience and promotes a more inclusive approach to data communication.

For more information contact the digital accessibility coordinator today!