As a data consultant, I often build dashboards to present complex data in a clear and understandable way. Today, I had the opportunity to create a dashboard with a focus on accessibility, a task that has reshaped my approach to data visualization.
The project required me to visualize some of the coronavirus data from 2020, ensuring that our dashboards met the Web Content Accessibility Guidelines (WCAG). This meant that my visualizations had to be accessible to as many people as possible, including those with disabilities.
The Challenge of Accessibility
My initial view of dashboard creation was largely about clarity and efficiency—making sure the data was easy to understand for a general audience. However, this project introduced me to the importance of considering all users, including those with visual impairments or other disabilities. It became clear that building an accessible dashboard requires a shift in perspective.
Key Learnings and Techniques
Considering All Users: Designing with a specific end user in mind, such as those with color blindness, is one aspect. However, creating a dashboard for all users requires a broader approach. It’s about making sure that everyone, regardless of their abilities, can interact with the data meaningfully.
Pre-attentive Attributes and Color: Using color effectively is crucial. For instance, employing green and red to indicate positive and negative values can help differentiate data points. However, it’s essential to use colors that are distinguishable for those with color blindness and to use texture or patterns in addition to color for differentiation for example using blue and orange is great alterative.
Keeping it Uncluttered: Simplicity is key. A clean, uncluttered design helps all users, especially those with cognitive disabilities. Avoiding unnecessary elements and focusing on the most critical data points can make a significant difference.
Thoughtful Filter Placement: For keyboard-only users, the placement of filters is important. Ensuring that filters are easy to tab through and logically placed enhances the overall usability of the dashboard.
Instructional Guidance: Adding clear instructions on how to use the dashboard can assist users who may find it challenging to navigate. Simple, straightforward language and step-by-step guides can make the dashboard more inviting and user-friendly.
Color Contrast Checker: Utilizing tools to check color contrast ensures that text is readable against background colors. This small step can greatly enhance the accessibility of the dashboard for users with visual impairments.
Narrator Tool: Adding text descriptions for charts is an easy step that significantly enhances accessibility. These descriptions can be read aloud by screen readers, such as the Narrator tool, providing a comprehensive understanding of the chart's content to users with visual impairments.
A Changed Perspective
Working on this dashboard allowed me to view the process through a new lens. I realized that making a few small changes could significantly improve the accessibility of a dashboard. These changes not only make the dashboard more inclusive but also demonstrate a commitment to meeting the needs of all users.
In conclusion, incorporating accessibility into dashboard design is not just about meeting regulations—it's about making data truly available to everyone. By considering the diverse needs of users, we can create dashboards that are not only functional but also inclusive and welcoming. All it takes just few small steps.