Accessibility, as it pertains to information technology (IT), is about removing barriers that inhibit the access of certain groups, including those with disabilities, mature users,and non-native language learners.
When users need or prefer a keyboard
Keyboard accessibility is important for users who rely on or prefer using a keyboard for screen navigation and input. Encourage proper accessibility by providing keyboard functionality to all available content: using the Tab key to select different interactive elements on a page, and the Enter key or Spacebar to activate an in-focus element.
The Tab key navigates through various interactive elements on a page. The visual indicator for this keyboard navigationis the same as the hover indicator; which is different than the indicator provided by the web browser.
The order in which interactive elements receive focus should be logical and predictable. Create the tab flow hierarchy by using the source code to arrange the keyboard navigation. Begin with the header, followed by the main navigation, then page navigation (from left to right, top to bottom), and end with the footer.
Use natively-accessible elements in navigation to activate links, buttons, and form controls with a keyboard. Reinforce semantic HTML to convey intent and meaning instead of simply defining the look and feel of an element. Enhance with ARIA (Accessible Rich Internet Application) labels when necessary. For additional customization, use tabindex=“0” to ensure a navigable element receives a focus indicator.
Provide a “Skip to content” option when there is lengthy navigation so a user may access main content faster. This option is a link that is visually hidden by default and appears when it receives keyboard focus via the Tab key.
Color accessibility is important for users who have visual impairments or are color blind. Contrast distinguishes words and images through a perceived difference in color. It separates elements and groupings in a layout and plays a crucial role in accommodating all types of users.
All type color combinations forPowerUIs must pass WCAG AA standards of 4.5:1.
There are many websites that check for color accessibility. Here is an example: