Function: contrastRatio()
function contrastRatio(a, b): number;
Defined in: contrast.ts:161
WCAG 2.x contrast ratio between two colours, 1–21.
Translucent inputs are composited (background over white, then foreground
over the resulting background) per docs/12 §9, so rgba(0,0,0,0.5) on white
scores like the grey it actually paints rather than like black.
Parameters
| Parameter | Type |
|---|---|
a | string |
b | string |
Returns
number