diff --git a/include/sfx2/namedcolor.hxx b/include/sfx2/namedcolor.hxx
index 1c5fe24b5144..6d82de7b30c3 100644
--- a/include/sfx2/namedcolor.hxx
+++ b/include/sfx2/namedcolor.hxx
@@ -31,7 +31,7 @@ struct SFX2_DLLPUBLIC NamedColor
     {
     }
 
-    model::ComplexColor getComplexColor()
+    model::ComplexColor getComplexColor() const
     {
         model::ComplexColor aComplexColor;
 
diff --git a/include/sfx2/objsh.hxx b/include/sfx2/objsh.hxx
index bad832977f65..14855e8b62f0 100644
--- a/include/sfx2/objsh.hxx
+++ b/include/sfx2/objsh.hxx
@@ -582,7 +582,7 @@ public:
     StarBASIC*                  GetBasic() const;
 
     std::optional<NamedColor> GetRecentColor(sal_uInt16 nSlotId);
-    void SetRecentColor(sal_uInt16 nSlotId, const NamedColor& rColor);
+    void SetRecentColor(sal_uInt16 nSlotId, const NamedColor& rColor, bool bBroadcast = true);
 
     virtual std::shared_ptr<sfx::IDocumentModelAccessor> GetDocumentModelAccessor() const;
     virtual std::set<Color> GetDocColors();
diff --git a/sfx2/source/doc/objcont.cxx b/sfx2/source/doc/objcont.cxx
index 1507ad6f810d..d2130979c9a6 100644
--- a/sfx2/source/doc/objcont.cxx
+++ b/sfx2/source/doc/objcont.cxx
@@ -326,10 +326,11 @@ std::optional<NamedColor> SfxObjectShell::GetRecentColor(sal_uInt16 nSlotId)
     return std::nullopt;
 }
 
-void SfxObjectShell::SetRecentColor(sal_uInt16 nSlotId, const NamedColor& rColor)
+void SfxObjectShell::SetRecentColor(sal_uInt16 nSlotId, const NamedColor& rColor, bool bBroadcast)
 {
     pImpl->m_aRecentColors[nSlotId] = rColor;
-    Broadcast(SfxHint(SfxHintId::ColorsChanged));
+    if (bBroadcast)
+        Broadcast(SfxHint(SfxHintId::ColorsChanged));
 }
 
 std::set<Color> SfxObjectShell::GetDocColors()
diff --git a/svx/inc/tbxcolorupdate.hxx b/svx/inc/tbxcolorupdate.hxx
index 6633090e0ee9..7e2170c7b599 100644
--- a/svx/inc/tbxcolorupdate.hxx
+++ b/svx/inc/tbxcolorupdate.hxx
@@ -59,7 +59,7 @@ namespace svx
         virtual ~ToolboxButtonColorUpdaterBase();
 
         void        Notify(SfxBroadcaster& rBC, const SfxHint& rHint) override;
-        void        SetRecentColor(const NamedColor& rNamedColor);
+        void        SetRecentColor(const NamedColor& rNamedColor, bool bBroadcast = true);
         void        Update( const NamedColor& rNamedColor );
         void        Update( const Color& rColor, bool bForceUpdate = false );
         Color const & GetCurrentColor() const { return maCurColor; }
diff --git a/svx/source/tbxctrls/tbxcolorupdate.cxx b/svx/source/tbxctrls/tbxcolorupdate.cxx
index be2d13c79b3e..c84d37fe73eb 100644
--- a/svx/source/tbxctrls/tbxcolorupdate.cxx
+++ b/svx/source/tbxctrls/tbxcolorupdate.cxx
@@ -122,6 +122,7 @@ namespace svx
                                 o3tl::toUInt32(o3tl::getToken(aUserData, 0, ';', nIdx)));
                 }
             }
+            SetRecentColor(aNamedColor, /*Broadcast=*/false);
             Update(aNamedColor);
         }
         else
@@ -149,10 +150,10 @@ namespace svx
         }
     }
 
-    void ToolboxButtonColorUpdaterBase::SetRecentColor(const NamedColor &rNamedColor)
+    void ToolboxButtonColorUpdaterBase::SetRecentColor(const NamedColor &rNamedColor, bool bBroadcast)
     {
         if (rtl::Reference xModel = dynamic_cast<SfxBaseModel*>(mxFrame->getController()->getModel().get()))
-            xModel->GetObjectShell()->SetRecentColor(mnSlotId, rNamedColor);
+            xModel->GetObjectShell()->SetRecentColor(mnSlotId, rNamedColor, bBroadcast);
         else if (!mbWideButton)
             Update(rNamedColor);
     }
diff --git a/sw/qa/extras/uiwriter/uiwriter9.cxx b/sw/qa/extras/uiwriter/uiwriter9.cxx
index f97d5a572d4d..8f968353bdf8 100644
--- a/sw/qa/extras/uiwriter/uiwriter9.cxx
+++ b/sw/qa/extras/uiwriter/uiwriter9.cxx
@@ -332,6 +332,22 @@ CPPUNIT_TEST_FIXTURE(SwUiWriterTest9, testTdf159816)
     xTransfer->PrivateDrop(*pWrtShell, ptTo, /*bMove=*/true, /*bXSelection=*/true);
 }
 
+CPPUNIT_TEST_FIXTURE(SwUiWriterTest9, testTdf34804)
+{
+    createSwDoc();
+    SwDoc* pDoc = getSwDoc();
+    SwWrtShell* pWrtShell = pDoc->GetDocShell()->GetWrtShell();
+
+    // Simulate a keyboard shortcut to SID_ATTR_CHAR_COLOR2 (which must use the shared button color)
+    dispatchCommand(mxComponent, u".uno:FontColor"_ustr, {});
+    pWrtShell->Insert(u"New World!"_ustr);
+
+    const uno::Reference<text::XTextRange> xRun = getRun(getParagraph(1, "New World!"), 1);
+    // (This test assumes that nothing in the unit tests has modified the app's recent font color)
+    // COL_DEFAULT_FONT is the default red color for the fontColor button on the toolbar.
+    CPPUNIT_ASSERT_EQUAL(COL_DEFAULT_FONT, getProperty<Color>(xRun, u"CharColor"_ustr));
+}
+
 CPPUNIT_TEST_FIXTURE(SwUiWriterTest9, testTdf139631)
 {
     // Unit test for tdf#139631
diff --git a/sw/source/uibase/shells/textsh1.cxx b/sw/source/uibase/shells/textsh1.cxx
index 1c07d8e8f5a3..2ac91aed446c 100644
--- a/sw/source/uibase/shells/textsh1.cxx
+++ b/sw/source/uibase/shells/textsh1.cxx
@@ -38,6 +38,7 @@
 #include <sfx2/htmlmode.hxx>
 #include <svl/whiter.hxx>
 #include <sfx2/bindings.hxx>
+#include <sfx2/namedcolor.hxx>
 #include <sfx2/viewfrm.hxx>
 #include <vcl/unohelp2.hxx>
 #include <vcl/weld.hxx>
@@ -1761,6 +1762,21 @@ void SwTextShell::Execute(SfxRequest &rReq)
 
         case SID_ATTR_CHAR_COLOR2:
         {
+            std::unique_ptr<const SvxColorItem> pRecentColor; // manage lifecycle scope
+            if (!pItem)
+            {
+                // no color provided: use the pre-selected color shown in the toolbar/sidebar
+                const std::optional<NamedColor>& oColor
+                    = GetView().GetDocShell()->GetRecentColor(SID_ATTR_CHAR_COLOR);
+                if (oColor.has_value())
+                {
+                    const model::ComplexColor& rCol = (*oColor).getComplexColor();
+                    pRecentColor = std::make_unique<const SvxColorItem>(
+                        rCol.getFinalColor(), rCol, RES_CHRATR_COLOR);
+                    pItem = pRecentColor.get();
+                }
+            }
+
             if (pItem)
             {
                 auto* pColorItem = static_cast<const SvxColorItem*>(pItem);
@@ -1783,7 +1799,7 @@ void SwTextShell::Execute(SfxRequest &rReq)
         case SID_ATTR_CHAR_COLOR_BACKGROUND: // deprecated
         case SID_ATTR_CHAR_COLOR_EXT:
         {
-            Color aColor;
+            Color aColor = COL_TRANSPARENT;
             model::ComplexColor aComplexColor;
 
             if (pItem)
@@ -1792,8 +1808,17 @@ void SwTextShell::Execute(SfxRequest &rReq)
                 aColor = pColorItem->GetValue();
                 aComplexColor = pColorItem->getComplexColor();
             }
-            else
-                aColor = COL_TRANSPARENT;
+            else if (nSlot == SID_ATTR_CHAR_BACK_COLOR)
+            {
+                // no color provided: use the pre-selected color shown in the toolbar/sidebar
+                const std::optional<NamedColor>& oColor
+                    = GetView().GetDocShell()->GetRecentColor(nSlot);
+                if (oColor.has_value())
+                {
+                    aComplexColor = (*oColor).getComplexColor();
+                    aColor = aComplexColor.getFinalColor();
+                }
+            }
 
             SwEditWin& rEdtWin = GetView().GetEditWin();
             if (nSlot != SID_ATTR_CHAR_COLOR_EXT)