Why Dark Mode Is Worth Setting Up Properly

Dark mode has moved well beyond a developer preference — it's now a mainstream accessibility and comfort feature. It reduces eye strain in low-light environments, can improve battery life on OLED screens, and is simply preferred by millions of users. Yet many people don't realize they need to enable it separately on each platform and app.

This guide gives you exact steps for every major platform, so you can get everything consistently dark in one session.

Windows 11 / Windows 10

  1. Open Settings (Windows key + I).
  2. Navigate to Personalisation → Colours.
  3. Under "Choose your mode," select Dark.
  4. Optionally choose Custom to set Windows interface to dark while keeping apps light, or vice versa.

Note: This controls system UI and apps that respect Windows' dark mode setting. Some apps have their own independent dark mode toggle.

macOS

  1. Open System Settings (Apple menu → System Settings).
  2. Click Appearance.
  3. Select Dark or Auto (Auto switches based on sunrise/sunset).

macOS also lets you set a dark menu bar and Dock independently — look for the Automatically hide and show the menu bar option in the same panel.

iPhone (iOS)

Quick method:

Add Dark Mode to your Control Centre (Settings → Control Centre → Add Dark Mode), then toggle it with one swipe.

Full settings method:
  1. Open Settings → Display & Brightness.
  2. Select Dark under Appearance.
  3. Enable Automatic to schedule dark mode based on sunset/sunrise or a custom schedule.

Android

The exact path varies slightly by manufacturer, but on stock Android:

  1. Open Settings → Display.
  2. Tap Dark Theme and toggle it on.
  3. Tap Schedule to automate it.

On Samsung One UI: Settings → Display → Light/Dark Mode. On Pixel: Settings → Display → Dark Theme.

Google Chrome

Chrome follows your operating system's dark mode setting for the browser UI. To force dark mode for web pages:

  1. Type chrome://flags in the address bar.
  2. Search for "Auto Dark Mode for Web Contents."
  3. Set it to Enabled and relaunch Chrome.

Warning: This flag forces dark mode on all websites, including those not designed for it. Results can be inconsistent. Use a browser extension like "Dark Reader" for more control.

Popular Apps

App Where to Find Dark Mode
WhatsApp Settings → Chats → Theme
YouTube Profile icon → Appearance → Dark Theme
Instagram Follows system setting (iOS/Android)
Slack Preferences → Themes → Colour Mode
VS Code File → Preferences → Colour Theme
Microsoft Word Account → Office Theme → Black

Setting Up Automatic Scheduling

The most effective approach is to automate dark mode so you don't have to think about it:

  • Windows: Use Task Scheduler or a free tool like Auto Dark Mode for Windows (open source, available on GitHub).
  • macOS: Use the built-in "Auto" setting under Appearances.
  • iOS: Settings → Display & Brightness → Automatic → Sunset to Sunrise.
  • Android: Settings → Display → Dark Theme → Schedule.

Wrapping Up

Enabling dark mode system-wide takes under five minutes and makes a noticeable difference for evening use. Set it to automatic, and you'll never have to think about it again — your devices will switch seamlessly as the day progresses.