diff --git a/python/PyQt6/core/auto_additions/qgis.py b/python/PyQt6/core/auto_additions/qgis.py
index ce54603fc041..f48a4ff35eb5 100644
--- a/python/PyQt6/core/auto_additions/qgis.py
+++ b/python/PyQt6/core/auto_additions/qgis.py
@@ -8554,6 +8554,18 @@
 QgsPainting.BlendMode.BlendXor = Qgis.BlendMode.Xor
 QgsPainting.BlendXor.is_monkey_patched = True
 QgsPainting.BlendXor.__doc__ = "XOR"
+QgsPainting.Nonseparable_Hue = Qgis.BlendMode.Nonseparable_Hue
+QgsPainting.Nonseparable_Hue.is_monkey_patched = True
+QgsPainting.Nonseparable_Hue.__doc__ = "Nonseparable Hue"
+QgsPainting.Nonseparable_Saturation = Qgis.BlendMode.Nonseparable_Saturation
+QgsPainting.Nonseparable_Saturation.is_monkey_patched = True
+QgsPainting.Nonseparable_Saturation.__doc__ = "Nonseparable Saturation"
+QgsPainting.Nonseparable_Color = Qgis.BlendMode.Nonseparable_Color
+QgsPainting.Nonseparable_Color.is_monkey_patched = True
+QgsPainting.Nonseparable_Color.__doc__ = "Nonseparable Color"
+QgsPainting.Nonseparable_Luminosity = Qgis.BlendMode.Nonseparable_Luminosity
+QgsPainting.Nonseparable_Luminosity.is_monkey_patched = True
+QgsPainting.Nonseparable_Luminosity.__doc__ = "Nonseparable Luminosity"
 Qgis.BlendMode.__doc__ = """Blending modes defining the available composition modes that can
 be used when painting.
 
@@ -8659,6 +8671,10 @@
 
   Available as ``QgsPainting.BlendXor`` in older QGIS releases.
 
+* ``Nonseparable_Hue``: Nonseparable Hue
+* ``Nonseparable_Saturation``: Nonseparable Saturation
+* ``Nonseparable_Color``: Nonseparable Color
+* ``Nonseparable_Luminosity``: Nonseparable Luminosity
 
 """
 # --
diff --git a/python/PyQt6/core/auto_generated/qgis.sip.in b/python/PyQt6/core/auto_generated/qgis.sip.in
index 5871b998f5e3..1e0fd5ed9c36 100644
--- a/python/PyQt6/core/auto_generated/qgis.sip.in
+++ b/python/PyQt6/core/auto_generated/qgis.sip.in
@@ -2635,6 +2635,10 @@ The development version
       SourceAtop,
       DestinationAtop,
       Xor,
+      Nonseparable_Hue,
+      Nonseparable_Saturation,
+      Nonseparable_Color,
+      Nonseparable_Luminosity
     };
 
     enum class SystemOfMeasurement /BaseType=IntEnum/
diff --git a/python/core/auto_additions/qgis.py b/python/core/auto_additions/qgis.py
index 4c06ddf6f95b..c7ebec8374d5 100644
--- a/python/core/auto_additions/qgis.py
+++ b/python/core/auto_additions/qgis.py
@@ -8476,6 +8476,18 @@
 QgsPainting.BlendMode.BlendXor = Qgis.BlendMode.Xor
 QgsPainting.BlendXor.is_monkey_patched = True
 QgsPainting.BlendXor.__doc__ = "XOR"
+QgsPainting.Nonseparable_Hue = Qgis.BlendMode.Nonseparable_Hue
+QgsPainting.Nonseparable_Hue.is_monkey_patched = True
+QgsPainting.Nonseparable_Hue.__doc__ = "Nonseparable Hue"
+QgsPainting.Nonseparable_Saturation = Qgis.BlendMode.Nonseparable_Saturation
+QgsPainting.Nonseparable_Saturation.is_monkey_patched = True
+QgsPainting.Nonseparable_Saturation.__doc__ = "Nonseparable Saturation"
+QgsPainting.Nonseparable_Color = Qgis.BlendMode.Nonseparable_Color
+QgsPainting.Nonseparable_Color.is_monkey_patched = True
+QgsPainting.Nonseparable_Color.__doc__ = "Nonseparable Color"
+QgsPainting.Nonseparable_Luminosity = Qgis.BlendMode.Nonseparable_Luminosity
+QgsPainting.Nonseparable_Luminosity.is_monkey_patched = True
+QgsPainting.Nonseparable_Luminosity.__doc__ = "Nonseparable Luminosity"
 Qgis.BlendMode.__doc__ = """Blending modes defining the available composition modes that can
 be used when painting.
 
@@ -8581,6 +8593,10 @@
 
   Available as ``QgsPainting.BlendXor`` in older QGIS releases.
 
+* ``Nonseparable_Hue``: Nonseparable Hue
+* ``Nonseparable_Saturation``: Nonseparable Saturation
+* ``Nonseparable_Color``: Nonseparable Color
+* ``Nonseparable_Luminosity``: Nonseparable Luminosity
 
 """
 # --
diff --git a/python/core/auto_generated/qgis.sip.in b/python/core/auto_generated/qgis.sip.in
index 7a33dc80aa1b..2f4f28b360d6 100644
--- a/python/core/auto_generated/qgis.sip.in
+++ b/python/core/auto_generated/qgis.sip.in
@@ -2635,6 +2635,10 @@ The development version
       SourceAtop,
       DestinationAtop,
       Xor,
+      Nonseparable_Hue,
+      Nonseparable_Saturation,
+      Nonseparable_Color,
+      Nonseparable_Luminosity
     };
 
     enum class SystemOfMeasurement
diff --git a/src/core/painting/qgspainting.cpp b/src/core/painting/qgspainting.cpp
index 6ed80c5f99c0..e937ea23b896 100644
--- a/src/core/painting/qgspainting.cpp
+++ b/src/core/painting/qgspainting.cpp
@@ -74,6 +74,14 @@ QPainter::CompositionMode QgsPainting::getCompositionMode( Qgis::BlendMode blend
       return QPainter::CompositionMode_DestinationAtop;
     case Qgis::BlendMode::Xor:
       return QPainter::CompositionMode_Xor;
+    case Qgis::BlendMode::Nonseparable_Hue:
+      return QPainter::CompositionMode_Nonseparable_Hue;
+    case Qgis::BlendMode::Nonseparable_Saturation:
+      return QPainter::CompositionMode_Nonseparable_Saturation;  
+    case Qgis::BlendMode::Nonseparable_Color:
+      return QPainter::CompositionMode_Nonseparable_Color;
+    case Qgis::BlendMode::Nonseparable_Luminosity:
+      return QPainter::CompositionMode_Nonseparable_Luminosity;
     default:
       QgsDebugError( QStringLiteral( "Blend mode %1 mapped to SourceOver" ).arg( qgsEnumValueToKey( blendMode ) ) );
       return QPainter::CompositionMode_SourceOver;
@@ -134,6 +142,14 @@ Qgis::BlendMode QgsPainting::getBlendModeEnum( QPainter::CompositionMode blendMo
       return Qgis::BlendMode::DestinationAtop;
     case QPainter::CompositionMode_Xor:
       return Qgis::BlendMode::Xor;
+    case QPainter::CompositionMode_Nonseparable_Hue:
+      return Qgis::BlendMode::Nonseparable_Hue;
+    case QPainter::CompositionMode_Nonseparable_Saturation:
+      return Qgis::BlendMode::Nonseparable_Saturation;
+    case  QPainter::CompositionMode_Nonseparable_Color:
+      return Qgis::BlendMode::Nonseparable_Color;
+    case QPainter::CompositionMode_Nonseparable_Luminosity:
+      return Qgis::BlendMode::Nonseparable_Luminosity;
     default:
       QgsDebugError( QStringLiteral( "Composition mode %1 mapped to Normal" ).arg( blendMode ) );
       return Qgis::BlendMode::Normal;
@@ -161,6 +177,10 @@ bool QgsPainting::isClippingMode( Qgis::BlendMode mode )
     case Qgis::BlendMode::DestinationOver:
     case Qgis::BlendMode::Clear:
     case Qgis::BlendMode::Destination:
+    case Qgis::BlendMode::Nonseparable_Hue:
+    case Qgis::BlendMode::Nonseparable_Saturation:
+    case Qgis::BlendMode::Nonseparable_Color:
+    case Qgis::BlendMode::Nonseparable_Luminosity;
       return false;
 
     case Qgis::BlendMode::SourceIn:
diff --git a/src/core/qgis.h b/src/core/qgis.h
index 31d6fba5792a..1ca5f7399b0a 100644
--- a/src/core/qgis.h
+++ b/src/core/qgis.h
@@ -4679,6 +4679,10 @@ class CORE_EXPORT Qgis
       SourceAtop SIP_MONKEYPATCH_COMPAT_NAME( BlendSourceAtop ), //!< Source atop
       DestinationAtop SIP_MONKEYPATCH_COMPAT_NAME( BlendDestinationAtop ), //!< Destination atop
       Xor SIP_MONKEYPATCH_COMPAT_NAME( BlendXor ), //!< XOR
+      Nonseparable_Hue, //!< Nonseparable Hue
+      Nonseparable_Saturation, //!< Nonseparable Saturation
+      Nonseparable_Color, //!< Nonseparable Color
+      Nonseparable_Luminosity //!< Nonseparable Luminosity
     };
     Q_ENUM( BlendMode )
 
diff --git a/src/core/qgsproperty.cpp b/src/core/qgsproperty.cpp
index da85a5c30150..365e16a53e32 100644
--- a/src/core/qgsproperty.cpp
+++ b/src/core/qgsproperty.cpp
@@ -105,7 +105,8 @@ QgsPropertyDefinition::QgsPropertyDefinition( const QString &name, const QString
       mTypes = DataTypeString;
       mHelpText = trString() + QStringLiteral( "[<b>Normal</b>|<b>Lighten</b>|<b>Screen</b>|<b>Dodge</b>|<br>"
                   "<b>Addition</b>|<b>Darken</b>|<b>Multiply</b>|<b>Burn</b>|<b>Overlay</b>|<br>"
-                  "<b>SoftLight</b>|<b>HardLight</b>|<b>Difference</b>|<b>Subtract</b>]" );
+                  "<b>SoftLight</b>|<b>HardLight</b>|<b>Difference</b>|<b>Subtract</b><br>]"
+                  "<b>Nonseparable_Hue</b>|<b>Nonseparable_Saturation</b>|<b>Nonseparable_Color</b>|<b>Nonseparable_Luminosity</b>]" );
       break;
 
     case Point:
diff --git a/src/core/symbology/qgssymbollayerutils.cpp b/src/core/symbology/qgssymbollayerutils.cpp
index c2b5ed72e94c..918767f72920 100644
--- a/src/core/symbology/qgssymbollayerutils.cpp
+++ b/src/core/symbology/qgssymbollayerutils.cpp
@@ -881,6 +881,10 @@ QPainter::CompositionMode QgsSymbolLayerUtils::decodeBlendMode( const QString &s
   if ( s.compare( QLatin1String( "HardLight" ), Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_HardLight;
   if ( s.compare( QLatin1String( "Difference" ), Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_Difference;
   if ( s.compare( QLatin1String( "Subtract" ), Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_Exclusion;
+  if ( s.compare( QLatin1String( "Nonseparable_Hue" ), Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_Nonseparable_Hue;
+  if ( s.compare( QLatin1String( "Nonseparable_Saturation" ), Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_Nonseparable_Saturation;
+  if ( s.compare( QLatin1String( "Nonseparable_Color" ), Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_Nonseparable_Color;
+  if ( s.compare( QLatin1String( "Nonseparable_Luminosity" ), Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_Nonseparable_Luminosity;
   return QPainter::CompositionMode_SourceOver; // "Normal"
 }
 
diff --git a/src/gui/qgsblendmodecombobox.cpp b/src/gui/qgsblendmodecombobox.cpp
index 81d91f019ff5..e8ca5c05b0c7 100644
--- a/src/gui/qgsblendmodecombobox.cpp
+++ b/src/gui/qgsblendmodecombobox.cpp
@@ -57,6 +57,11 @@ void QgsBlendModeComboBox::updateModes()
   insertSeparator( count() );
   addItem( tr( "Difference" ), static_cast<int>( Qgis::BlendMode::Difference ) );
   addItem( tr( "Subtract" ), static_cast<int>( Qgis::BlendMode::Subtract ) );
+  insertSeparator( count() );
+  addItem( tr( "Nonseparable Hue" ), static_cast<int>( Qgis::BlendMode::Nonseparable_Hue ) );
+  addItem( tr( "Nonseparable Saturation" ), static_cast<int>( Qgis::BlendMode::Nonseparable_Saturation ) );
+  addItem( tr( "Nonseparable Color" ), static_cast<int>( Qgis::BlendMode::Nonseparable_Color ) );
+  addItem( tr( "Nonseparable Luminosity" ), static_cast<int>( Qgis::BlendMode::Nonseparable_Luminosity ) );
 
   if ( mShowClipModes )
   {