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Built-in Option
How to Enable Microsoft Copilot's Own Dark Mode
Microsoft Copilot includes a built-in dark mode. Here is how to turn it on — then see below for a more customizable alternative.
On desktop (copilot.microsoft.com)
Open Copilot
Go to copilot.microsoft.com in your browser and sign in with your Microsoft account.
Open Settings
Click your profile icon or the menu in the top-right corner and choose Settings.
Choose the Dark appearance
Under Appearance or Theme, select Dark — the Copilot interface switches to dark colors.
On iPhone & Android
Copilot follows the system
The Copilot app on iPhone and Android matches your device theme — set your phone to dark in system settings.
On Windows 11
The Copilot app on Windows follows your Windows theme: Settings → Personalization → Colors → Dark.
Limitation: Copilot's dark theme is a fixed palette tied partly to your system settings, with no per-site custom colors or schedule. Turn Off the Lights lets you pick your own dark colors and automate switching on Copilot and every other site.
Official instructions: Microsoft Copilot help & learning — Microsoft Support and Access Microsoft Copilot on Windows — Microsoft Support.
We verified these steps on copilot.microsoft.com and the Copilot apps on Windows 11, iPhone, and Android in October 2026. Last updated: .
Side-by-Side
Microsoft Copilot's Built-in Dark Mode vs Turn Off the Lights
Both options give you a dark Microsoft Copilot — the difference is how much control you keep over it.
| Feature | Microsoft Copilot Built-in | Turn Off the Lights |
|---|---|---|
| Dark theme on Copilot | ✅ Yes — via Settings → Appearance | ✅ Yes — via Night Mode |
| Custom colors | ❌ One fixed palette | ✅ Background, text, links and buttons — all adjustable |
| Automatic schedule | ⚠️ Follows system theme only | ✅ Sunrise/sunset or custom hours |
| Extra appearance options | ❌ Theme toggle only | ✅ Per-element colors plus per-site rules |
| Works on other websites | ❌ Copilot only | ✅ Same dark theme on every site you visit |
| OLED true black | ⚠️ One fixed dark palette | ✅ Optional true black for OLED battery savings |
| Mobile | ✅ Copilot app follows device theme | ⚠️ Desktop browsers, plus Safari on iOS and Samsung Internet on Android |
| Price | ✅ Free | ✅ Free & open source |
Extension Features
Everything You Need for the Best Microsoft Copilot Dark Mode
Turn Off the Lights is not just a simple dark theme for Microsoft Copilot. It is a complete browser enhancement built to give you full control over how every website looks in the dark.
Consistent Microsoft Copilot Dark Theme
Apply a uniform dark theme to copilot.microsoft.com with your chosen colors — not just the fixed default theme.
Auto-Schedule Day/Night Switch
Set sunrise/sunset switching or custom hours. Your dark theme turns on and off automatically without any manual intervention.
One Theme for All Websites
The same dark theme applies to every website — Microsoft Copilot, Instagram Web, Messenger, YouTube, Reddit, and beyond.
Choose Your Own Dark Colors
Pick background, text, link, button, and border colors independently. True black for OLED or warm dark for reading comfort.
Smart Detection
Turn Off the Lights detects when Microsoft Copilot has already applied its own dark mode and can skip double-layering automatically.
No Microsoft Copilot Data Access
The extension applies visual changes only. It does not read, store, or transmit any Microsoft Copilot content or account data.
How It Works
Enable Microsoft Copilot Dark Mode in Under 30 Seconds
Turn Off the Lights is available in every major browser store and takes less than 30 seconds to install. Switch Night Mode on once in Options — from then on it applies automatically.
Install Turn Off the Lights
Add the free extension from Chrome Web Store, Firefox Add-ons, Edge Add-ons, or Opera Add-ons.
Open copilot.microsoft.com
Navigate to copilot.microsoft.com in your browser with the extension installed.
Enable Night Mode
Open Options → Night Mode tab and toggle the Night Mode switch on.
Set Schedule & Colors
Choose custom dark colors and set an automatic day/night schedule so night mode on Copilot switches without any manual effort.
Browser Support
One Microsoft Copilot Dark Mode Extension. Every Browser.
Turn Off the Lights is available across all major desktop browsers. Install it in one browser and your Night Mode settings sync automatically to others.
⬇ Install Free — Night Mode for Copilot
FAQ
Frequently Asked Questions About Microsoft Copilot Dark Mode
Microsoft Copilot has a built-in dark mode in its settings. For a fully customizable alternative with custom colors and auto-scheduling, install Turn Off the Lights and enable Night Mode in Options.
Yes — copilot.microsoft.com offers a Dark appearance under Settings → Appearance. For custom colors and an automatic schedule, use the free Turn Off the Lights extension.
Microsoft Copilot's dark mode has fixed colors and requires manual toggling. Turn Off the Lights offers custom colors, automatic scheduling, and the same dark theme on every other website you visit.
The Copilot mobile and Windows apps follow your system theme — set your device to dark. Turn Off the Lights is a browser extension for desktop browsers, ideal for copilot.microsoft.com.
On OLED screens, true black pixels use less power. A true-black custom theme from Turn Off the Lights Night Mode saves more than any fixed dark-grey theme.
Reload the page, then check Settings → Appearance → Dark. The Copilot apps on Windows and mobile follow the system theme, so check your device theme setting too. If dark mode is missing or too limited, Turn Off the Lights applies a dark theme to Copilot in any desktop browser.
Why Turn Off the Lights
The Most Complete Microsoft Copilot Dark Mode Solution Available
While Microsoft Copilot does offer a built-in dark mode, many users searching for Microsoft Copilot dark mode want more control — custom colors, automatic scheduling, and a consistent dark experience that extends beyond Microsoft Copilot to every other website.
Custom Colors for Copilot's Dark Theme
Microsoft Copilot's built-in dark mode uses a fixed dark palette. Turn Off the Lights lets you choose your own background color — pure black for OLED, warm dark for eye comfort, or any shade you prefer. Apply the same custom theme consistently across Microsoft Copilot and all other sites.
Automatic Dark Mode Scheduling
Microsoft Copilot's built-in dark mode requires manual toggling. Turn Off the Lights lets you set sunrise/sunset switching or custom hours, so your dark theme turns on and off automatically across Microsoft Copilot and every other site.
One Extension, Dark Mode Everywhere
Microsoft Copilot is just one website. Turn Off the Lights applies the same Night Mode theme to every website you visit — Copilot, Bing, Outlook, Microsoft 365 apps, and beyond — giving you a unified dark experience across your entire browser.
Open Source, Private, and Free — Always
Turn Off the Lights collects no personal data, displays no advertising, and charges nothing. The extension is fully open-source under the GNU General Public License Version 2 (GPLv2), with its complete source code available on GitHub for anyone to inspect. It has been in continuous development since 2009 and remains one of the most trusted browser extensions available, with millions of active users across all major browsers. Stefan Van Damme is the solo developer and has maintained the extension with monthly updates for over 15 years.
Dark Mode Guides
More Dark Mode Guides
Get the same dark experience on your other favorite websites and browsers: