How can I implement a dark mode toggle using Tailwind CSS?

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How can I implement a dark mode toggle using Tailwind CSS? Pending Review

Asked on Jan 18, 2026

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Implementing a dark mode toggle with Tailwind CSS involves using the "dark" variant to apply different styles based on a class on the root element. Here's a basic example of how you can achieve this.

<!-- BEGIN COPY / PASTE -->
    <div id="app" class="bg-white dark:bg-gray-900 text-black dark:text-white min-h-screen">
      <button onclick="toggleDarkMode()" class="p-2 bg-gray-200 dark:bg-gray-800 rounded">
        Toggle Dark Mode
      </button>
      <p class="p-4">This is a sample text.</p>
    </div>

    <script>
      function toggleDarkMode() {
        document.getElementById('app').classList.toggle('dark');
      }
    </script>
    <!-- END COPY / PASTE -->

Additional Comment:

The "dark" class is toggled on the root element (in this case, a div with id "app").
Tailwind's "dark:" variant is used to apply styles when the "dark" class is present.
Ensure your Tailwind configuration allows dark mode by setting "darkMode" to 'class' in your tailwind.config.js.
This example uses JavaScript to toggle the class, but you can also manage it with frameworks like React or Vue.

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How can I implement a dark mode toggle using Tailwind CSS? Pending Review

Asked on Jan 18, 2026

Answer

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