Not all website users have the ability to see things in the same way as the designer envisioned them, or interact with a website using standard methods. 1 in 5 people in Australia have some form of disability, and this includes people who are color blind (1 in 12 men, 1 in 200 women), have low vision (1 in 30 people), or are blind (1 in 188 people). While we don’t know the exact numbers, there are also many people who can’t see or use a mouse for whatever reason, deaf users whose first primary language is sign language, and visitors who use assistive software or hardware (such as screen readers) to access the web.
The Web Content Accessibility Guidelines (WCAG) are maintained by the Worldwide Web Consortium (w3). With forethought and planning, it is very easy to achieve the minimum AA guidelines, and we find that we can almost always achieve AAA level without compromising aesthetic design.
Good accessibility means designing a website with allĀ users in mind right from the beginning, so that it provides a good experience for everyone.