UI Theme Designer is a browser-based editor.
Watch this video to learn more about UI Theme Designer.
The UI Theme Designer supports all web-based SAP applications and clients based on HTML4 and HTML5.

The UI Theme Designer is available in three channels:
- SAP NetWeaver Application Server ABAP
- Transaction /UI5/THEME_DESIGNER
- SAP Enterprise Portal
- Content Administration → Portal Display → Portal Themes → UI Theme Designer
- SAP Business Technology Platform
- SAP Fiori launchpad → User Actions Menu → Theme Manager → Launch Theme Designer
Prerequisites, installation, and configuration are available in the SAP Note1852401 – UI Theme Designer for SAP NetWeaver AS ABAP (main SAP Note).
Hint
When creating themes for the Unified Rendering, it is recommended to always use the latest version. Please check SAP Note 2090746 – WD ABAP: Unified Rendering Update with TCI - Instructions and Related SAP Notes. for details.To design a theme, refer to the following procedure.

All themes have a base theme (CSS files). For SAP Fiori 3, this is SAP Quartz Light. After choosing a template application to visualize the changes, the new theme is built upon a set of theme-related (specific style) CSS files. The theme generator merges the base theme with the specific style into the final theme.
SAPUI5 uses LESS to handle the CSS parameters and allows some additional features. LESS can be considered a preprocessor that results in the final version of the CSS. Find out more at http://lesscss.org/.
The available base themes depend on the release of the system providing the UI theme designer.

SAP delivers the following themes for SAPUI5:
- SAP Quartz Dark
- Theme released for SAP Fiori 3
- Initial shipment in SAP S/4HANA Cloud 2002 / SAPUI5 1.72
- Uses own typeface "72"
- SAP Quartz Light
- Theme released for SAP Fiori 3
- Initial shipment in SAP Cloud Platform 1904 / SAPUI5 1.65
- Uses own typeface "72"
- SAP Belize (Deep)
- Theme released for SAP Fiori 2.0
- Initial shipment in software component SAP_UI 7.51 / SAPUI5 1.44
- Uses typefaces Arial Regular and Bold
- SAP Blue Crystal
- Theme released for SAP Fiori
- Initial shipment in software component SAP_UI 7.40 / SAPUI5 1.28
- Uses typefaces Arial Regular and Bold
- SAP High Contrast Black / White
- Theme released for accessibility purpose
- Initial shipment in software component SAP_UI 7.40 / SAPUI5 1.28
- Reworked in software component SAP_UI 7.51 for SAP Fiori 2.0
- SAP Gold Reflection
- Theme released for non-Fiori standalone apps
- Initial shipment in SAPUI5 1.0
- Not working with SAP Fiori
- Deprecated