High Contrast Registry Key Location in Windows

This article provides the exact Windows Registry paths and key values used to configure system-wide high-contrast accessibility themes. By navigating the Windows Registry Editor (regedit), administrators and users can view, modify, or deploy high-contrast display settings for the current user, the default user profile, and the Windows sign-in screen.

Primary Registry Key Locations

The core configuration settings for High Contrast accessibility mode are located in the following Registry paths:

• Current User Profile: HKEY_CURRENT_USER\Control Panel\Accessibility\HighContrast
• System-Wide / Sign-In Screen (Default Profile): HKEY_USERS\.DEFAULT\Control Panel\Accessibility\HighContrast

Key Values and Definitions

Inside the HighContrast key, several values control how the feature behaves:

• Flags (REG_SZ): A bitmask represented as a string of numbers that controls the state of High Contrast.
  • Setting this value to 126 typically enables High Contrast mode with the keyboard shortcut allowed.
  • Setting this value to 122 typically disables High Contrast mode while keeping accessibility shortcuts active.
• High Contrast Scheme (REG_SZ): Specifies the active high-contrast theme or color scheme name (e.g., High Contrast Black, High Contrast White, High Contrast #1, or custom theme names).
• Previous High Contrast Scheme (REG_SZ): Stores the previously selected scheme before the current change.

High Contrast Color Customization Paths

To modify individual UI element colors applied by High Contrast themes, navigate to the system color registry paths:

• Current User Colors: HKEY_CURRENT_USER\Control Panel\Colors
• Default System Colors: HKEY_USERS\.DEFAULT\Control Panel\Colors

These keys contain standard RGB string values (such as 255 255 255 for white or 0 0 0 for black) assigned to interface components like Window, WindowText, ButtonFace, and HotTrackingColor.

How to Access and Modify the Keys

1. Press Win + R, type regedit, and press Enter to launch the Registry Editor.
2. Paste HKEY_CURRENT_USER\Control Panel\Accessibility\HighContrast into the address bar at the top.
3. Double-click Flags or High Contrast Scheme to edit their string values as needed.
4. Sign out and sign back in, or restart the system, for changes to take effect.