# color-hex-case

> **Warning** This rule is deprecated and will be removed in the future. See [the migration guide](../../../docs/migration-guide/to-15.md).

Specify lowercase or uppercase for hex colors.

<!-- prettier-ignore -->
```css
a { color: #fff }
/**        ↑
 * This hex color */
```

The [`fix` option](../../../docs/user-guide/options.md#fix) can automatically fix all of the problems reported by this rule.

## Options

`string`: `"lower"|"upper"`

### `"lower"`

The following patterns are considered problems:

<!-- prettier-ignore -->
```css
a { color: #FFF; }
```

The following patterns are _not_ considered problems:

<!-- prettier-ignore -->
```css
a { color: #000; }
```

<!-- prettier-ignore -->
```css
a { color: #fff; }
```

### `"upper"`

The following patterns are considered problems:

<!-- prettier-ignore -->
```css
a { color: #fff; }
```

The following patterns are _not_ considered problems:

<!-- prettier-ignore -->
```css
a { color: #000; }
```

<!-- prettier-ignore -->
```css
a { color: #FFF; }
```