How can I implement dark mode toggle functionality with Tailwind CSS?

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How can I implement dark mode toggle functionality with Tailwind CSS?

Asked on Jan 06, 2026

Answer

To implement a dark mode toggle with Tailwind CSS, you can use the `dark` variant to apply styles conditionally based on a class added to the HTML element. Here's a basic example of how to set up a dark mode toggle.

<!-- BEGIN COPY / PASTE -->
    <html lang="en">
    <head>
      <script>
        function toggleDarkMode() {
          document.documentElement.classList.toggle('dark');
        }
      </script>
    </head>
    <body class="bg-white dark:bg-gray-900 text-black dark:text-white">
      <button onclick="toggleDarkMode()" class="p-2 bg-gray-200 dark:bg-gray-800 rounded">
        Toggle Dark Mode
      </button>
      <div class="p-4">
        <p class="text-lg">This is a sample text.</p>
      </div>
    </body>
    </html>
    <!-- END COPY / PASTE -->

Additional Comment:

The `dark` class is toggled on the `` or `` element to switch themes.
Tailwind's `dark` variant allows you to define styles for dark mode by prefixing classes with `dark:`.
Ensure your Tailwind configuration includes the `darkMode` option set to `'class'` to use this method.
JavaScript is used here to toggle the class, but you can also manage this with frameworks like React or Vue.

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

How can I implement dark mode toggle functionality with Tailwind CSS?

Asked on Jan 06, 2026

Answer

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