Dark Mode Design in 2025: Best Practices for Web and UI

Dark mode is no longer just a trend — it’s an expected feature. Here’s how to design it well in 2025.

Whether you’re building a WordPress site, a mobile app or a custom UI, dark mode has moved from a “nice-to-have” to a user expectation. Modern operating systems, browsers and apps all offer dark mode options — and users often prefer it for readability, battery life and comfort.

Why Dark Mode Matters

  • Reduces eye strain in low-light environments
  • Improves accessibility when designed correctly
  • Can enhance focus and reduce screen fatigue
  • Offers brand flexibility and can make design elements pop

Best Practices for Designing Dark Mode in 2025

1. Don’t Just Invert Colours

True dark mode isn’t just black backgrounds and white text. It needs a considered palette of dark greys, subtle accents and text shades that preserve hierarchy and contrast.

2. Adjust Brand Colours Thoughtfully

Some brand colours don’t translate well in dark environments. Blues may become too vibrant, reds may be harsh. Adjust your palette to suit both light and dark themes while maintaining recognisability.

3. Maintain Visual Hierarchy

It’s easy for dark interfaces to flatten. Use lighter shades for headings, muted greys for body text, and accent colours for CTAs and links. Make sure interactive elements stand out without overwhelming.

4. Use Semantic Colour Tokens

If you’re working with design systems or CSS variables, define colour roles (e.g. --text-primary, --bg-default) instead of fixed colours. This makes it easier to switch themes globally.

5. Test in Real Environments

Always preview your dark mode design on real devices and with accessibility tools (like high contrast or screen readers). What looks good on a MacBook might fail on an Android phone in sunlight.

How to Add Dark Mode to WordPress

If you’re building a WordPress site, dark mode can be implemented using CSS with the prefers-color-scheme media query:


@media (prefers-color-scheme: dark) {
  body {
    background-color: #121212;
    color: #eaeaea;
  }
}

You can also use plugins like WP Dark Mode or build a toggle with JavaScript and CSS variables for more control.

Should Every Site Have Dark Mode?

Not necessarily — but users expect the option. If your audience is in tech, UX, dev or creative industries, it’s quickly becoming a standard. For content-heavy or late-night use sites (like blogs, portfolios or SaaS dashboards), it’s a great UX enhancement.

In Summary

Dark mode in 2025 is about more than aesthetics. Done right, it improves usability, reduces eye strain, and shows that you care about your users. Whether you’re designing in Figma or developing in WordPress, thoughtful implementation matters.

Want help adding dark mode to your site or building an accessible theme that works in any lighting? Let’s chat.