diff --git a/change/@fluentui-react-b55536c0-811e-41b6-84dd-d1ccb7d92969.json b/change/@fluentui-react-b55536c0-811e-41b6-84dd-d1ccb7d92969.json
new file mode 100644
index 00000000000000..a72b5f6b7ea21b
--- /dev/null
+++ b/change/@fluentui-react-b55536c0-811e-41b6-84dd-d1ccb7d92969.json
@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "fix: Removing background color for Primary SplitButton's menu button in HCM.",
+  "packageName": "@fluentui/react",
+  "email": "esteban.230@hotmail.com",
+  "dependentChangeType": "patch"
+}
diff --git a/packages/react/src/components/Button/ButtonThemes.ts b/packages/react/src/components/Button/ButtonThemes.ts
index d1c7a378a1b735..92b0b138c197ca 100644
--- a/packages/react/src/components/Button/ButtonThemes.ts
+++ b/packages/react/src/components/Button/ButtonThemes.ts
@@ -255,7 +255,7 @@ export function primaryStyles(theme: ITheme): IButtonStyles {
       color: s.primaryButtonText,
       selectors: {
         [HighContrastSelector]: {
-          backgroundColor: 'WindowText',
+          backgroundColor: 'Canvas',
         },
         ':hover': {
           backgroundColor: s.primaryButtonBackgroundHovered,