# contrastRatio

```ts
function contrastRatio(l1, l2): number;
```

Defined in: packages/asset-client/src/palette.ts:106

WCAG contrast ratio between two luminances: `(L1 + 0.05) / (L2 + 0.05)`,
lighter on top. 1 = identical, 21 = black against white.

## Parameters

| Parameter | Type |
| ------ | ------ |
| `l1` | `number` |
| `l2` | `number` |

## Returns

`number`