How can I detect Windows 10 light/dark mode?

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I'm using Windows.UI.ViewManagement.UISettings to get system accent color but it seems this class does not have any method or property for light/dark mode. I failed to find a document for this feature, how can I detect this?

PS: I'm making a JS app which does not have access for Windows.UI.Xaml namespace.

I have found an easier solution, which should work in JavaScript apps as well, without requiring the Windows Runtime Component - the UISettings class:

var uiSettings = new Windows.UI.ViewManagement.UISettings();
var color = uiSettings.getColorValue(

The color you get is either black for dark theme or white for light theme.

The class also has very useful event ColorValuesChanged which you can use to observe theme changes at runtime.

How to detect Windows 10 light/dark mode in Win32 application , I have found an easier solution, which should work in JavaScript apps as well, without requiring the Windows Runtime Component - the UISettings class: To enable dark mode in the Windows 10 May 2019 Update, navigate to Settings > Personalization > Colors. Select the drop-down menu for "Choose your color" and pick Light, Dark, or Custom. Light or

You can create a Windows Runtime Component project in your solution from there you access Windows.UI.Xaml namespace. Add a method to check current ApplicationTheme like that.

public sealed class Test
    public static string CurrentTheme()
        var isDark = Application.Current.RequestedTheme == ApplicationTheme.Dark;

        if (isDark)
            return "Dark";

        return "Light";

Add reference to windows runtime component project in your javascript app project and you can call this method where ever you want to check application theme. Take a look here for walkthrough on createing Windows Runtime Component.

How can I detect Windows 10 light/dark mode?, Gets or sets a value that determines the light-dark preference for the overall theme of By default your app runs using the theme set by the user in Windows settings section applies only to apps for Windows 8, not UWP apps for Windows 10. To switch from the dark to light system mode automatically on Windows 10, use these steps: Open Start . Search for Task Scheduler and click the top result to open the app.

Before the Windows Anniversary update you could not do that. The application theme was always the one you set in the App.xaml file:


Now with the new Anniversary Update, you can remove this line from the App.xaml file, which will make the app honor the user's system settings.

The RequestedTheme enumeration has actually three values - Dark, Light and Default. Default is the value that reflects the system settings, Dark and Light force the theme.

If you want to actually detect the current theme in code when App's RequestedTheme is Default, you will probably need to check the some color resource like SystemAltHighColor for its value, because that will give you an idea of what theme is currently set.

Application.RequestedTheme Property (Windows.UI.Xaml , Now that they have it, things are swinging in the opposite direction: Microsoft is bringing a 'Light Mode' to Windows 10, helping bring balance to  Windows 10 comes with two themes – dark theme and light theme. These themes can be activated from Windows Settings (hotkey Win+I) for either Windows 10 apps or windows. You will be able to find these settings under Personalization / Colors section in Windows settings.

For Windows 10, the value of the AppsUseLightTheme property in the path HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Themes\Personalize of the registry specifies wherever Windows is in dark or light mode.

Windows 10 is getting a 'Light' theme for dark mode haters, How to detect Windows 10 light/dark mode in Win32 application? A bit of context: Sciter (pure win32 application) is already capable to render UWP alike UIs:. Screenshot: Ty Pendlebury/CNET Next, click on the Personalization icon (fifth on the list), and then Colors. At the bottom of the Colors menu you'll find "Choose your default app mode" with the

ThemeResources have been introduced in 8.1 and their behavior is similar in W10. Therefore you can define suitable resource in ThemeDictionaries responsible for available Themes and then you can check the defined resource when you whant to know which Theme is currently used.

The code will be very similar to the one in this answer.

How to detect Windows 10 light/dark mode in Win32 application?, Auto Dark Mode is a simple tool that allows users to enable the light and dark dark theme for Windows 10 can also force apps to switch to a dark mode, Additionally, you can also use location service to detect the right time  Here's How: 1 Open Microsoft Edge. 2 Click/tap on the Settings and more (Alt+F) 3 dots menu icon, and click/tap on Settings.

Auto Dark Mode for Windows 10 Review, Light; Dark; Set by Battery Saver (the recommended default option). When running on Android 10 (API level 29) and higher, the recommended  Windows 10 Night Light Schedule Has Wrong Sunrise-Sunset Times I have the Night Light schedule set to Sunset to sunrise , which is currently followed by (23:00 — 12:11). The problem is that the Night Light feature isn't turning on and off at appropriate times.

Dark theme, Right now, when I use dark mode on Windows, the window title border and How to detect Windows 10 light/dark mode in Win32 application? Detecting Windows Dark Mode setting + High Contrast. The first step is finding out what theme we should be applying. To do that we need to tell what dark mode choice the user has made and detect when it’s changed. We also need to tell if the user has turned on High Contrast and detect when it’s changed. Dark mode detection

Support dark theme on Windows, The same goes for Windows 10 light/dark mode- It'd be great if Discord could detect whether the OS light/dark state and mirror that. (The web browser Brave can  The application displays a configuration menu when you start it after installation. The selection menu displays the current mode, light or dark, and an option to switch to the "change automatic" feature. Change automatic, as the name implies, switches between dark and light mode automatically based on the time of day.

  • How would this work in JavaScript? I.e. using wscript from the command line?
  • I need a solution that also works for HTML but this one sadly seems to work only on XAML apps.
  • AppsUseLightTheme (REG_DWORD): 0 = Dark mode, 1 = Light mode
  • It seems the solution is only for XAML apps. No solution for HTML apps?
  • @KagamiSaschaRosylight I've not played with HTML much for now, but maybe you can do something similar.