How can I implement dark mode using Tailwind's configuration options?

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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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Ask any question about Tailwind CSS here... and get an instant response.

How can I implement dark mode using Tailwind's configuration options?

Asked on Jan 09, 2026

Answer

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