For backgrounds behind text, use solid, contrasting colors, and avoid the use of textures and patterns, which can make letterforms difficult to distinguish or even illegible. Choose combinations of text color and background color with care. Value contrast between body text and its background color should be a minimum of about eighty percent.
This article is for developers and content editors seeking to supplement the visual elements of a user interface with text equivalents. This article describes what text equivalents are, why they are required, how to create them, and the best approach to writing and editing them.
Since computer use became more widespread in the 1980's and 1990's, considerable effort has been put into ensuring that the blind have equal access to state of the art techology. However, the dominance of graphical user interfaces and direct manipulation has reduced the effectiveness of old speech-based systems. This article discusses aspects of tactile and haptic interfaces, reviews current research on the topic, and provides design principles for practitioners culled from recent research.
If you do not consider the needs of people with color-deficient vision when choosing color schemes for applications and Web pages, those you create may be difficult to use or even indecipherable for about one in twelve users.