stylelint
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A mighty, modern CSS linter.
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Markdown
# color-hex-case
Specify lowercase or uppercase for hex colors.
```css
a { color: #fff }
/** ↑
* This hex color */
```
The `--fix` option on the [command line](../../../docs/user-guide/cli.md#autofixing-errors) can automatically fix all of the problems reported by this rule.
## Options
`string`: `"lower"|"upper"`
### `"lower"`
The following patterns are considered violations:
```css
a { color: #FFF; }
```
The following patterns are *not* considered violations:
```css
a { color: #000; }
```
```css
a { color: #fff; }
```
### `"upper"`
The following patterns are considered violations:
```css
a { color: #fff; }
```
The following patterns are *not* considered violations:
```css
a { color: #000; }
```
```css
a { color: #FFF; }
```