Format top row headers alone in Matrix visual

Hi Kirthiga ,

Thanks for reaching out to Microsoft Fabric Community.

Thanks for the detailed explanation and screenshots.

As already pointed out by Elena_Kalina  and Brianyoung , Power BI doesn’t allow applying background color to only the top-level row header. The formatting applies to all row headers at that level. Adjusting the height of just the top-level header isn’t supported either. Custom visuals from AppSource may help if more granular formatting is needed.

Regarding the blank subcategories, since they still contribute to aggregated values, the Matrix visual treats them as valid entries. You can consider adding a measure to filter out the blanks at the visual level if needed.

Hope this helps. Please consider marking the helpful reply as Accepted Solution and giving kudos to assist others with similar issues. Let us know if you need further help.

Thank you.