Quick answer: to switch to a dark theme in Windows 11 or 10:
- Press Windows + I to open Settings.
- Go to Personalization › Colors.
- Under Choose your mode, select Dark.
The taskbar, Start menu, File Explorer, Settings and most apps turn dark immediately. No restart needed. For a full dark look with a matching wallpaper, pick a dark theme in Personalization › Themes.
Sommaire
- Dark mode, dark theme, contrast theme: what’s the difference?
- Switch to dark mode in Windows 11
- Switch to dark mode in Windows 10
- Custom mode: dark taskbar, light apps (or the reverse)
- Apply a full dark theme
- Fine-tune the look: accent color and transparency
- Turn on dark mode in popular apps
- Switch between light and dark automatically
- Advanced: switch with a command (registry)
- Dark mode not working? Fixes
- Is dark mode better for your eyes and battery?
- Frequently asked questions
- Sources and references
Dark mode, dark theme, contrast theme: what’s the difference?
| Option | What it changes | Where | Best for |
|---|---|---|---|
| Dark mode | Windows and app interface colors | Personalization › Colors | Most people |
| Custom mode | Dark Windows with light apps, or the reverse | Personalization › Colors › Custom | Dark taskbar but light documents |
| Dark theme | Dark mode + wallpaper + accent color + sounds | Personalization › Themes | A complete, coordinated look |
| Contrast theme | Very high contrast colors everywhere, including websites | Accessibility › Contrast themes | Low vision, readability needs |
| Night light | Warmer screen colors (less blue light), not dark mode | System › Display › Night light | Evening use, eye comfort |
Switch to dark mode in Windows 11
- Right-click an empty area of the desktop and choose Personalize (or press Windows + I › Personalization).
- Click Colors.
- Open the Choose your mode drop-down and select Dark.
Shortcut: press Windows + R, type ms-settings:colors and press Enter to open the Colors page directly.
Switch to dark mode in Windows 10
- Open Settings › Personalization › Colors.
- Under Choose your color (or Choose your mode, depending on version), select Dark.
Older Windows 10 versions use two separate settings: Choose your default Windows mode and Choose your default app mode. Set both to Dark.
Custom mode: dark taskbar, light apps (or the reverse)
- In Personalization › Colors, set Choose your mode to Custom.
- Choose your default Windows mode: controls the taskbar, Start menu and notification area.
- Choose your default app mode: controls File Explorer, Settings and apps that follow Windows.
| Combination | Result |
|---|---|
| Windows: Dark · Apps: Light | Dark taskbar and Start, bright documents and apps. Popular for office work. |
| Windows: Light · Apps: Dark | Light taskbar, dark apps. Less common. |
| Windows: Dark · Apps: Dark | Same as Dark mode. |
Apply a full dark theme
- Go to Settings › Personalization › Themes.
- Under Current theme, click a dark theme such as Windows (dark).
- For more, click Browse themes to open free themes in the Microsoft Store.
Fine-tune the look: accent color and transparency
| Setting (Personalization › Colors) | Effect |
|---|---|
| Transparency effects | Slight blur behind windows and the taskbar. Turn off for a flatter look or slightly better performance. |
| Accent color (Automatic or manual) | Highlight color for buttons and links. Automatic picks it from your wallpaper. |
| Show accent color on Start and taskbar | Colors the Start menu and taskbar. Available only in Dark or Custom mode. |
| Show accent color on title bars and window borders | Colors the top bar of windows. |
Source: Microsoft Support – Personalize your colors in Windows.
Turn on dark mode in popular apps
Most modern apps follow the Windows setting automatically. Here is how to check or force it:
| App | Setting |
|---|---|
| Microsoft Edge | Settings › Appearance › Overall appearance › Dark or System default |
| Google Chrome | Follows Windows. Or Settings › Appearance › Mode › Dark |
| Firefox | Settings › General › Website appearance › Dark |
| Microsoft Office (Word, Excel, Outlook) | File › Account › Office Theme › Black or Use system setting |
| Microsoft Teams | Settings › Appearance and accessibility › Theme › Dark |
| Notepad, Paint, Photos | Settings (gear icon) › App theme › Dark or Use system setting |
Menu names can vary slightly between app versions.
Switch between light and dark automatically
Windows has no built-in schedule for dark mode. You have two options:
- Auto Dark Mode: a free, open-source app available in the Microsoft Store. It switches at sunset/sunrise or at times you choose, and can change the wallpaper too.
- Task Scheduler: create two tasks that run the registry commands below at set times (for advanced users).
Don’t confuse it with Night light (System › Display), which only makes colors warmer at night.
Advanced: switch with a command (registry)
Useful for scripts, or when Settings is blocked because Windows isn’t activated. Open Terminal (not as administrator) and run:
# Dark mode for apps and Windows
reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Themes\Personalize /v AppsUseLightTheme /t REG_DWORD /d 0 /f
reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Themes\Personalize /v SystemUsesLightTheme /t REG_DWORD /d 0 /f
# Back to light mode: same commands with /d 1Restart File Explorer or sign out and back in if some elements don’t update.
Careful: these commands only change two personalization values for your account. Don’t edit other registry keys unless you know what they do.
Dark mode not working? Fixes
| Problem | Likely cause | Fix |
|---|---|---|
| Colors page is greyed out: “You need to activate Windows” | Windows not activated | Activate Windows (Settings › System › Activation), or use the registry commands above |
| Some windows stay white | Older programs that don’t support dark mode | Nothing to fix in Windows; check the app’s own theme setting |
| File Explorer still light | Explorer didn’t refresh | Task Manager › Windows Explorer › Restart |
| Websites are still bright | Sites choose their own colors | Use the browser’s dark setting; many sites follow it |
| “Some settings are managed by your organization” | Policy on a work or school PC | Ask your IT department |
| Text hard to read in dark mode | Low contrast | Try Accessibility › Contrast themes, or raise brightness |
Is dark mode better for your eyes and battery?
- Comfort: many people find dark mode more comfortable in a dim room. In a bright room, light mode is often easier to read.
- Battery: on OLED screens, black pixels use less power, so dark mode can save battery. On standard LCD laptop screens, the saving is small.
- Sleep: for less blue light in the evening, use Night light in addition to dark mode.
🛠️ Real-world case: “dark mode is greyed out” on a new PC
| Situation | Freshly installed Windows 11 PC; all options under Personalization › Colors were greyed out |
|---|---|
| Cause | Windows was not yet activated: the license key from the old PC hadn’t been entered |
| Fix | Entered the product key in Settings › System › Activation; Personalization unlocked immediately and Dark mode was applied |
| Time | About 3 minutes |
Takeaway: when every personalization option is greyed out, check activation before anything else.
Frequently asked questions
How do I switch to a dark theme in Windows 11?
Open Settings › Personalization › Colors and choose Dark under Choose your mode. For a full dark theme with wallpaper, go to Personalization › Themes and pick Windows (dark).
Is there a keyboard shortcut for dark mode?
No built-in shortcut toggles dark mode. Press Windows + R and type ms-settings:colors to reach the setting fastest, or use the Auto Dark Mode app to add a hotkey.
Can I use dark mode without activating Windows?
The Settings page is locked until Windows is activated, but the two registry values AppsUseLightTheme and SystemUsesLightTheme set to 0 still enable dark mode.
Why are some apps still light in dark mode?
Older desktop programs don’t support Windows dark mode. Check the app’s own settings for a theme option.
How do I make the taskbar dark but keep apps light?
Choose Custom under Choose your mode, then set the default Windows mode to Dark and the default app mode to Light.
Does dark mode save battery?
Yes on OLED screens, where black pixels use little power. On standard LCD screens, the difference is small.
How do I go back to light mode?
Open Settings › Personalization › Colors and choose Light under Choose your mode.
Sources and references
- Microsoft Support – Personalize your colors in Windows
- Own tests on Windows 11 and Windows 10, [add test date]
