Using color

You must make decisions about using colors in an accessible file. You must not rely only on color to communicate particular information or directives to users. A color-blind user cannot operate a page if it asks to click on the blue area to launch a new page or the red area to hear music. Offer text equivalents on the page or in an alternate version to make your site accessible. Also, check that significant contrast exists between foreground and background colors to enhance readability. If you place light gray text on a white background, users cannot easily read it. Similarly, small text is difficult for many visitors to read. Using high-contrast and large or resizable text benefits most users, even those without impairments.