Operating system display mode that increases contrast. Respect system preferences and ensure custom styles remain legible.
A visible caret or pointer state that helps users track input focus or text insertion position, essential for low-vision and cognitive accessibility.
The contrast ratio between foreground and background colors. WCAG requires 4.5:1 for body text and 3:1 for large text, icons, and UI.
A range of conditions where certain colors are harder to distinguish. Designs must not rely on color alone to convey information.
Numeric ratio expressing luminance difference between two colors. Common thresholds: 4.5:1 for normal text, 3:1 for large text or UI.
Text presented within an image instead of actual characters. Generally discouraged; use real text where possible.
This glossary is continuously improved and maintained by WebAbility to advance accessible design and development.Contact us to suggest improvements or report issues.