Activate a built-in theme or build a custom one so Lightning Experience reflects your company colors and logo. You configure everything from the Themes and Branding Setup page, and the active theme applies to all users in the org.
- Open the Themes and Branding page
From Setup, type Themes and Branding into Quick Find and select it. Review the list of available themes and note which one is active.
- Create a custom theme
Click New Theme. Give it a name, then set your primary, header, and background colors. Let Salesforce generate the brand-based palette from those core colors.
- Add your brand images
Upload a header logo, an optional page-background image, and a loading-page brand image. Use a logo sized for the header, around 600 by 120 pixels, so it fits without stretching.
- Preview and activate
Preview the theme to see the colors fill the header and navigation. When it looks right, activate it. Activating the new theme automatically deactivates the previous one for the whole org.
The three core colors you choose; Salesforce builds the rest of the palette from them.
The brand image shown in the global header across Lightning Experience.
The image users see on the splash screen while Lightning Experience loads.
Keep it white, use a flat brand color, or upload a background image for record pages and lists.
- Only one theme is active at a time; activating a new theme switches off the old one for every user.
- Overriding the generated palette can break contrast and make text hard to read, especially for low-vision users.
- The active theme does not restyle Setup, Experience Cloud sites, or the mobile app; those are branded separately.
- Built-in themes like Lightning Blue cannot be edited or deleted; clone the look into a custom theme if you need changes.