SharePoint added two Microsoft-designed dark themes in December 2025: Dark Teal and Dark Blue.
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Key Facts:
New themes: Dark Teal, Dark Blue
Application: Via site settings
Impact: Does not override existing custom themes
Availability: All SharePoint Online tenants
New themes: Dark Teal, Dark Blue
Application: Via site settings
Impact: Does not override existing custom themes
Availability: All SharePoint Online tenants
Site owners can apply dark themes without affecting custom branding already in place. The themes provide a modern dark mode appearance that some users prefer for reduced eye strain.
Sources: HANDS ON SharePoint
