Readability
How easily a reader can understand written text, influenced by measure, line height, contrast, and typeface choice.
Learn more in the guide
Measure & ReadabilityRelated terms
Measure
The width of a block of text, usually expressed in characters per line; also called line length.
Line Height
The CSS property that sets the height of a line box, controlling vertical spacing between lines of text.
Contrast Ratio
The luminance difference between text and background colors; WCAG AA requires 4.5:1 for normal text and 3:1 for large text.