Definition

Dark Mode is a user interface (UI) design option that uses dark background colors with light text and elements, reducing screen brightness and creating a visually less intense experience. It’s popular in apps and websites as an alternative to the traditional light mode. Dark mode reduces eye strain, especially in low-light environments, and may conserve battery life on OLED screens. Designers must ensure that contrast levels and readability are optimized for accessibility.

Why it matters

Dark mode has gone from a nice-to-have to an expected feature — users who prefer it will notice its absence and consider it a signal that your product isn't fully polished. Beyond aesthetics, dark mode reduces eye strain for users who work in low-light environments for long periods, which describes most of your power users. Implementing it well requires more than inverting colors — you need to rethink shadows, contrast, and image handling.

Real-world example

Typefully's Look settings offer a clear three-way toggle (Light / Dark / System) alongside a live preview of the interface — letting users choose their preferred mode with full visual context.

Typefully dark mode settings light dark system toggle
Confused about
Dark Mode
?
Design is fun, but it's not easy.
Get help from a senior designer.
Start your project with us!
Start a project