How to Implement Dark Mode Using Tailwind CSS

Dark mode is one of the essential web design trends that provide users with a comfortable and visually appealing experience. In this guide, we will explain how to implement dark mode in web applications using Tailwind CSS.


Before You Begin: Installing Tailwind CSS

  • Name
    Installing tailwindcss
    Type
    Description

    To implement dark mode, you first need to install Tailwind CSS in your project. You can install it using the following command.

install tailwind

npm install tailwindcss

Dark Mode Configuration

  • Name
    Configuring Dark Mode
    Type
    Description

    Tailwind CSS uses the dark class to support dark mode. This class enables the switching between dark mode and light mode. First, open the tailwind.config.js file and add the darkMode configuration.

tailwind.config.js

// tailwind.config.js
module.exports = {
    darkMode: 'class',
// ... Other configurations
}

Adding Dark Mode Styles

  • Name
    Adding Styles for Dark Mode
    Type
    Description

    Dark mode styles need to be added to the existing styles. For example, if you want to change the background color and text color in dark mode, you can add classes as shown below.

    In the example, bg-white represents the background color in light mode, and dark:bg-gray-800 represents the background color in dark mode.

Adding Dark Mode Styles using dark:

<div className="bg-white dark:bg-gray-800 text-black dark:text-white">
<!-- Contents -->
</div>

Adding Dark Mode Toggle Button

  • Name
    Adding Dark Mode Toggle Button
    Type
    Description

    It's recommended to add a toggle button that allows users to switch between dark mode and light mode. You can achieve this by using JavaScript to manipulate the class of HTML elements.

Toggle Button

<button id="darkModeToggle" class="text-gray-600 dark:text-gray-400">Toggle Dark Mode</button>

_app.js

const darkModeToggle = document.getElementById('darkModeToggle')

darkModeToggle.addEventListener('click', () => {
  document.documentElement.classList.toggle('dark')
})

Summary of Implementing Dark Mode Using Tailwind CSS

We have discussed how to implement dark mode in web applications using Tailwind CSS. Dark mode enhances the user experience and can be easily implemented using Tailwind CSS's simple class-based approach. While adjusting the design, keep accessibility in mind and provide a better environment for users.

Lastly, we'll explain how to prioritize applying dark mode over the user's light/dark mode preference. This concludes the article with the information provided here.

_app.js

// Fixing Dark Mode
useEffect(() => {
  document.documentElement.classList.add('dark') // Adding 'dark' class from the start when the page loads
}, [])