Accessibility in web design usually reffers to the degree to which a Web site is usable by people with disabilities. Poorly designed Web pages often have access issues for the following groups of people:

    * Visually impaired people using screen readers
    * Color blind people
    * Physically impaired people

The W3C has guidelines dedicated to making web site more accessible split into three levels of compliance: HTTP://www.w3.org/WAI/[/define]" class="newWindow">http://www.w3.org/WAI/