Microsoft dark themes for SharePoint sites

Two new Microsoft-designed dark themes (Dark Teal, Dark Blue) will be available for SharePoint sites starting mid-December 2025. They enhance visual experience, support accessibility, and can be applied via site settings without affecting existing themes or functionality. No admin action is needed before rollout. Introduction Coming soon to SharePoint: Site owners and admins will be able to apply two new Microsoft-designed multi-color dark themes. These official themes offer modern dark color palettes with multiple colors combinations, enabling richer visual experiences and consistent branding across sites. Both themes are available out-of-the-box and can be configured via site settings. This message is associated with Roadmap ID 526788. When this will happen: Targeted Release (Worldwide): Rollout begins mid-December 2025, completes early January 2026 General Availability (Worldwide, GCC, GCC High, DoD): Rollout begins mid-January 2026, completes early February 2026 How this affects your organization: Who is affected: SharePoint Site owners and SharePoint admins across all Microsoft 365 environments (Worldwide, GCC, GCC High, DoD) What will happen: Two new Microsoft-designed dark themes (Dark Teal, Dark Blue) will be available out-of-the-box Themes can be applied via “Change the look” in site settings The themes update site headers, footers, section design, Text web part, and Design Ideas Designed for low-light environments and compliant with Microsoft accessibility standards No impact to existing themes or site functionality Note: Previously applied PowerShell settings that disable all out-of-box themes from Microsoft remain effective, and the PowerShell command can still be used to manage the Microsoft theme availability. What you can do to prepare: No admin action is required prior to rollout. After rollout: Notify site owners and users about the new dark themes Encourage exploration of the new options for improved branding and visual comfort Learn more: Site theme Set-SPOHideDefaultThemes Compliance considerations: No compliance considerations identified, review as appropriate for your organization. Message ID: MC1187401

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