Hi @BP
I understand that both Outlook and Teams have developed a warm pink tint, while other applications still display normally. Since the effect is limited to these Microsoft apps, it may be related to their appearance or transparency rendering rather than the monitor itself.
On Windows 11, Microsoft 365 apps can display a background color hue through an effect called Mica, which allows the desktop background color to show through parts of the application. Microsoft recommends disabling Transparency effects if you do not want this tint. Please refer the following article:
https://support.microsoft.com/en-us/office/foundations-experiences/change-the-look-and-feel-of-microsoft-365
If the pink tint remains, please also open Settings > Accessibility > Color filters and confirm that Color filters is turned off. Windows color filters change the color palette displayed on the screen.
Could you please confirm which versions of Outlook, Microsoft Teams, and Windows you are currently using?
Could you please let me know when you first noticed the pink hue in Outlook and Teams?
Did it begin after a Windows update, an Outlook or Teams update, a graphics-driver update, or any change to your display, theme, wallpaper, or accessibility settings?
As an additional troubleshooting step, could you try creating a new Windows user profile and then open Outlook and Teams from that profile?
Please let me know the result.