Whether white text on background meets the given WCAG contrast ratio
(defaults to 4.5:1, the AA threshold for normal text). Use to choose a
readable text color over a brand-colored surface — white when it passes, a
dark color otherwise. Returns false for an invalid color.
Parameters
background: string
The CSS color string of the surface.
OptionalminRatio: number = 4.5
Minimum white-on-background contrast ratio (default 4.5).
Whether white text on
backgroundmeets the given WCAG contrast ratio (defaults to 4.5:1, the AA threshold for normal text). Use to choose a readable text color over a brand-colored surface — white when it passes, a dark color otherwise. Returns false for an invalid color.