Why is consistency critical in web design for accessibility?

Consistency is crucial in web design for accessibility because it helps users predict how to interact with elements on a website. When users encounter familiar design patterns, navigation methods, and interactions, they can more easily understand how to use the site effectively. This predictability is especially important for individuals with disabilities, who may rely on assistive technologies or have cognitive challenges that make navigating unfamiliar interfaces difficult.

By maintaining consistent layouts, navigation systems, and interaction behaviors across a website, designers create a user experience that is intuitive and easier to learn. Users can focus on the content and tasks at hand, rather than struggling to figure out how to use a site that constantly changes its design or functionality. This reliability enhances usability and accessibility, promoting inclusivity for all users.