---
title: "Core — lighten / darken"
canonical: https://sky-ui.cf.sky.com/core/utilities/lighten-darken
apiPackages: [{"name":"@sky-uk/ui-core","representedVersion":"13.2.0"}]
---

# Core — lighten / darken

```js
import { lighten, darken } from '@sky-uk/ui-core';
```

---

`@sky-uk/ui-core` provides a couple of utilities that help when adjusting color brightness:

- `lighten` - Will return a lightened version of the color you pass to it
- `darken` - Will return a darkend version of the color you pass to it

```js
lighten(1, '#000000');
darken(1, '#ffffff');
```