Vue ColorBox - Accessibility

Accessibility Features Overview

NOTE
The overall accessibility level of your application depends on the ColorBox features that you use.
Accessibility Requirement Support Level
Right-to-Left Support
Keyboard Navigation Support
Screen Reader Support
Contrast Color Theme
Mobile Device Support
Lighthouse Accessibility Validation
Axe Accessibility Validation
WAVE Accessibility Validation
Section 508 Support
WCAG 2.x Support
  • - All component features meet the requirement
  • - Some component features may not meet the requirement
  • - Accessibility requirement is not supported

Accessibility Standards Compliance

The ColorBox component complies to all Section 508 and WCAG 2.x standards criteria except the following:

Section 508 criteria WCAG 2.x criteria Exception description
11.5.2.13 Tracking of focus and selection attributes 2.4.3 Focus Order (Level A) The ColorBox component does not meet this criterion.

Keyboard Navigation

A user can use the following keys to interact with the ColorBox component:

Key Action
← → ↑ ↓ Moves the color pointer.
Ctrl + ↑ Moves the RGB slider up.
Ctrl + ↓ Moves the RGB slider down.
Ctrl + ← Moves the transparency slider left.
Ctrl + → Moves the transparency slider right.
Enter Selects the color.
Alt + ↑ Opens the drop-down editor.
Alt + ↓ or Esc Closes the drop-down editor.

Use the registerKeyHandler(key, handler) method to implement a custom handler for a key.

  • <template>
  • <DxColorBox :ref="myColorBoxRef" />
  • </template>
  • <script>
  • import 'devextreme/dist/css/dx.light.css';
  •  
  • import DxColorBox from 'devextreme-vue/color-box';
  •  
  • const myColorBoxRef = 'my-color-box';
  •  
  • export default {
  • components: {
  • DxColorBox
  • },
  • data() {
  • return {
  • myColorBoxRef
  • }
  • },
  • computed: {
  • colorBox: function() {
  • return this.$refs[myColorBoxRef].instance;
  • }
  • },
  • mounted: function() {
  • this.colorBox.registerKeyHandler('backspace', function(e) {
  • // The argument "e" contains information on the event
  • });
  • this.colorBox.registerKeyHandler('space', function(e) {
  • // ...
  • });
  • }
  • }
  • </script>

Screen Reader Support

The ColorBox component supports screen readers and complies to WAI-ARIA standards. The exceptions are listed in the Accessibility Standards Compliance topic.

To improve accessibility, use the inputAttr property to specify aria-label for the component. You do not need to specify aria-label if you use label.