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

Asked on Dec 12, 2025

Answer

To implement a dark mode toggle in Tailwind CSS, you can use the "dark" variant to apply different styles based on a dark mode class. This typically involves toggling a class on the root element to switch between light and dark modes.

<!-- 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-blue-500 text-white">
        Toggle Dark Mode
      </button>
      <p class="p-4">This is a paragraph that changes with dark mode.</p>
    </div>

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

Additional Comment:

Tailwind's "dark" variant allows you to apply styles conditionally based on a "dark" class.
In the example, the button toggles the "dark" class on the root element, switching styles.
Ensure your Tailwind configuration file has "darkMode" set to "class" to use this method.
Consider using local storage to remember the user's preference across sessions.

✅ Answered with Tailwind CSS best practices.

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 Dec 12, 2025

Answer

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