Accessibility in ASP.NET MVC Chart component

17 Jan 20245 minutes to read

The Chart component followed the accessibility guidelines and standards, including ADA, Section 508, WCAG 2.2 standards, and WCAG roles that are commonly used to evaluate accessibility.

The accessibility compliance for the Chart component is outlined below.

Accessibility Criteria Compatibility
WCAG 2.2 Support Yes
Section 508 Support Yes
Screen Reader Support Yes
Right-To-Left Support Yes
Color Contrast Yes
Mobile Device Support Yes
Keyboard Navigation Support Yes
Accessibility Checker Validation Yes
Axe-core Accessibility Validation Yes
Yes - All features of the component meet the requirement.
Intermediate - Some features of the component do not meet the requirement.
No - The component does not meet the requirement.

WAI-ARIA attributes

The Chart component followed the WAI-ARIA patterns to meet the accessibility. The following ARIA attributes are used in the Chart component:

  • img (role)
  • button (role)
  • region (role)
  • aria-label (attribute)
  • aria-hidden (attribute)
  • aria-pressed (attribute)

Keyboard interaction

The Chart component followed the keyboard interaction guideline, making it easy for people who use assistive technologies (AT) and those who completely rely on keyboard navigation. The following keyboard shortcuts are supported by the Chart component.

Press To do this
Alt + J Moves the focus to the chart element.
Tab Moves the focus to the next element in the chart.
Shift + Tab Moves the focus to the previous element in the chart.
Down Arrow Moves the focus to the data point left side from the selected point.
Up Arrow Moves the focus to the data point right side from the selected point.
Left Arrow Moves the focus to the next series in the chart.
Right Arrow Moves the focus to the previous series in the chart.
ESC Cancel the tooltip for the data point.
Enter/Space Selects the data point in the series.
Down/Left Arrow Moves the focus to the legend left side from the selected legend.
Up/Right Arrow Moves the focus to the legend right side from the selected legend.
Enter/Space Toggles the visibility of the corresponding series.
Ctrl + + Zoom in the chart.
Ctrl + - Zoom out the chart.
Down/Up Arrow Pan the chart vertically.
Left/Right Arrow Pan the chart horizontally.
R Reset the zoomed chart.
Ctrl + P Prints the Chart.

Ensuring accessibility

The Chart component’s accessibility levels are ensured through an accessibility-checker and axe-core software tools during automated testing.

The accessibility compliance of the Chart component is shown in the following sample. Open the sample in a new window to evaluate the accessibility of the Chart component with accessibility tools.

See also