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How can I implement dark mode using Tailwind's configuration options?
Asked on Jan 09, 2026
Answer
Tailwind CSS allows you to implement dark mode by configuring the `darkMode` option in your `tailwind.config.js` file. This enables you to apply dark mode styles conditionally using the `dark` variant.
<!-- BEGIN COPY / PASTE -->
// tailwind.config.js
module.exports = {
darkMode: 'class', // or 'media'
theme: {
extend: {},
},
variants: {
extend: {},
},
plugins: [],
}
<!-- END COPY / PASTE -->Additional Comment:
- Set `darkMode` to 'class' to toggle dark mode using a specific class (e.g., `class="dark"` on the root element).
- Alternatively, use 'media' to automatically switch based on the user's system preferences.
- Use the `dark:` prefix in your HTML to apply styles when dark mode is active, such as `dark:bg-gray-800`.
- Ensure your HTML structure supports toggling the dark mode class effectively, often by JavaScript.
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