ColorPicker

The ColorPicker is a compact color selection component providing a wide color spectrum and predefined palette.

Accessibility Support

Out of the box, the Telerik and Kendo UI ColorPicker provides extensive accessibility support and enables users with disabilities to acquire complete control over its features.

The ColorPicker is compliant with the Web Content Accessibility Guidelines (WCAG) 2.2 standards and Section 508 requirements, follows the Web Accessibility Initiative - Accessible Rich Internet Applications (WAI-ARIA) best practices for implementing the keyboard navigation for its component role, provides options for managing its focus and is tested against the most popular screen readers.

WAI-ARIA

This section lists the selectors, attributes, and behavior patterns supported by the component and its composite elements, if any.

The ColorPicker popup contains in itself ColorGradient, ColorPalette, a UI to switch between them, and a button to reset its value. All the containing elements must implement their own specification apart from the ColorGradient element where some changes are required.

ColorPicker Wrapping Element

SelectorAttributeUsage
.k-colorpickerrole=comboboxThe focusable element of the component should have role combobox (an input with popup).
aria-label or aria-labelledbyThe component needs an accessible name to be assigned to it. Must also include the currently selected value in the component.
aria-haspopup=dialogIndicates the component has a Dialog Popup.
aria-expandedAnnounces the state of the visibility of the popup.
aria-controls=.k-colorpicker-popup idPoints to the popup element. Signifies that the combobox element controls the dialog.
tabindex=0The element must be focusable.
.k-invalid,.ng-invalidaria-invalid=trueAttribute is rendered only when the picker is in form and announces the valid state of the component.
.k-colorpicker.k-disabledaria-disabled=trueAttribute is rendered only when the picker is disabled.

ColorGradient in the Popup

SelectorAttributeUsage
.k-colorgradientrole=none/undefinedThe ColorGradient element must have its role removed.
aria-label=undefinedThe ColorGradient element must have its aria-label attribute removed.
tabindex=-1/undefinedThe ColorGradient must be removed from the page tab sequence.

Keyboard Shortcuts

When k-colorpicker element is focused

ShortcutBehavior
Alt/Opt(Mac) DownOpens pop up
EnterOpens pop up
Alt/Opt(Mac) Up or EscCloses popup

When focus is in the Popup

When opened, the Popup element uses Tab navigation to iterate over its inner elements. The focus remains trapped within the Popup. The inner elements (ColorPlatte, ColorGradient and Buttonss implement their own specification).

ShortcutBehavior
EscCloses Popup and moves focus back to k-colorpicker element.
TabNavigates to the next focusable element in the Popup. If current focus is on the last element, moves focus to the first focusable item in the Popup.
Shift + TabNavigates to the previous focusable element in the Popup. If current focus is on the first element, moves focus to the last focusable item in the Popup.
EnterFor button items, executes the currently focused button action.

Testing

The ColorPicker has been extensively tested automatically with axe-core and manually with the most popular screen readers.

Screen Readers

The ColorPicker has been tested with the following screen readers and browsers combinations:

EnvironmentTool
FirefoxNVDA
ChromeJAWS
Microsoft EdgeJAWS

Resources