diff --git a/novelwriter/common.py b/novelwriter/common.py
index 50ae5dfd..771b6232 100644
--- a/novelwriter/common.py
+++ b/novelwriter/common.py
@@ -38,7 +38,7 @@ from urllib.parse import urljoin
 from urllib.request import pathname2url
 
 from PyQt6.QtCore import QCoreApplication, QMimeData, QUrl
-from PyQt6.QtGui import QAction, QColor, QDesktopServices, QFont, QFontDatabase, QFontInfo
+from PyQt6.QtGui import QAction, QDesktopServices, QFont, QFontDatabase, QFontInfo
 from PyQt6.QtWidgets import QMenu, QMenuBar, QWidget
 
 from novelwriter.constants import nwConst, nwLabels, nwUnicode, trConst
@@ -417,11 +417,6 @@ def numberToRoman(value: int, toLower: bool = False) -> str:
 #  Qt Helpers
 ##
 
-def cssCol(col: QColor, alpha: int | None = None) -> str:
-    """Convert a QColor object to an rgba entry to use in CSS."""
-    return f"rgba({col.red()}, {col.green()}, {col.blue()}, {alpha or col.alpha()})"
-
-
 def describeFont(font: QFont) -> str:
     """Describe a font in a way that can be displayed on the GUI."""
     if isinstance(font, QFont):
diff --git a/novelwriter/dialogs/about.py b/novelwriter/dialogs/about.py
index 6cc7b8e1..e122fd19 100644
--- a/novelwriter/dialogs/about.py
+++ b/novelwriter/dialogs/about.py
@@ -31,11 +31,11 @@ from PyQt6.QtWidgets import (
 )
 
 from novelwriter import CONFIG, SHARED
-from novelwriter.common import cssCol, readTextFile
+from novelwriter.common import readTextFile
 from novelwriter.extensions.configlayout import NColorLabel
 from novelwriter.extensions.modified import NDialog
 from novelwriter.extensions.versioninfo import VersionInfoWidget
-from novelwriter.types import QtAlignRightTop, QtDialogClose
+from novelwriter.types import QtAlignRightTop, QtDialogClose, QtHexArgb
 
 logger = logging.getLogger(__name__)
 
@@ -135,7 +135,7 @@ class GuiAbout(NDialog):
 
     def _setStyleSheet(self) -> None:
         """Set stylesheet text document."""
-        baseCol = cssCol(self.palette().window().color())
+        baseCol = self.palette().window().color().name(QtHexArgb)
         self.txtCredits.setStyleSheet(
             f"QTextBrowser {{border: none; background: {baseCol};}} "
         )
diff --git a/novelwriter/gui/theme.py b/novelwriter/gui/theme.py
index 2aaacda3..d7578389 100644
--- a/novelwriter/gui/theme.py
+++ b/novelwriter/gui/theme.py
@@ -37,12 +37,12 @@ from PyQt6.QtGui import (
 from PyQt6.QtWidgets import QApplication
 
 from novelwriter import CONFIG
-from novelwriter.common import NWConfigParser, cssCol, minmax
+from novelwriter.common import NWConfigParser, minmax
 from novelwriter.config import DEF_GUI, DEF_ICONS, DEF_SYNTAX
 from novelwriter.constants import nwLabels
 from novelwriter.enum import nwItemClass, nwItemLayout, nwItemType
 from novelwriter.error import logException
-from novelwriter.types import QtBlack, QtPaintAntiAlias, QtTransparent
+from novelwriter.types import QtBlack, QtHexArgb, QtPaintAntiAlias, QtTransparent
 
 logger = logging.getLogger(__name__)
 
@@ -528,27 +528,29 @@ class GuiTheme:
         """Build default style sheets."""
         self._styleSheets = {}
 
-        tCol = palette.text().color()
-        hCol = palette.highlight().color()
+        text = palette.text().color()
+        text.setAlpha(48)
+        tCol = text.name(QtHexArgb)
+        hCol = palette.highlight().color().name(QtHexArgb)
 
         # Flat Tab Widget and Tab Bar:
         self._styleSheets[STYLES_FLAT_TABS] = (
             "QTabWidget::pane {border: 0;} "
             "QTabWidget QTabBar::tab {border: 0; padding: 4px 8px;} "
-            f"QTabWidget QTabBar::tab:selected {{color: {cssCol(hCol)};}} "
+            f"QTabWidget QTabBar::tab:selected {{color: {hCol};}} "
         )
 
         # Minimal Tool Button
         self._styleSheets[STYLES_MIN_TOOLBUTTON] = (
             "QToolButton {padding: 2px; margin: 0; border: none; background: transparent;} "
-            f"QToolButton:hover {{border: none; background: {cssCol(tCol, 48)};}} "
+            f"QToolButton:hover {{border: none; background: {tCol};}} "
             "QToolButton::menu-indicator {image: none;} "
         )
 
         # Big Tool Button
         self._styleSheets[STYLES_BIG_TOOLBUTTON] = (
             "QToolButton {padding: 6px; margin: 0; border: none; background: transparent;} "
-            f"QToolButton:hover {{border: none; background: {cssCol(tCol, 48)};}} "
+            f"QToolButton:hover {{border: none; background: {tCol};}} "
             "QToolButton::menu-indicator {image: none;} "
         )
 
diff --git a/novelwriter/tools/dictionaries.py b/novelwriter/tools/dictionaries.py
index e7d1da1b..90f618bc 100644
--- a/novelwriter/tools/dictionaries.py
+++ b/novelwriter/tools/dictionaries.py
@@ -36,10 +36,10 @@ from PyQt6.QtWidgets import (
 )
 
 from novelwriter import CONFIG, SHARED
-from novelwriter.common import cssCol, formatFileFilter, formatInt, getFileSize, openExternalPath
+from novelwriter.common import formatFileFilter, formatInt, getFileSize, openExternalPath
 from novelwriter.error import formatException
 from novelwriter.extensions.modified import NIconToolButton, NNonBlockingDialog
-from novelwriter.types import QtDialogClose
+from novelwriter.types import QtDialogClose, QtHexArgb
 
 logger = logging.getLogger(__name__)
 
@@ -101,7 +101,6 @@ class GuiDictionaries(NNonBlockingDialog):
         # Info Box
         self.infoBox = QPlainTextEdit(self)
         self.infoBox.setReadOnly(True)
-        self.infoBox.setFixedHeight(4*SHARED.theme.fontPixelSize)
         self.infoBox.setFrameStyle(QFrame.Shape.NoFrame)
 
         # Buttons
@@ -109,21 +108,16 @@ class GuiDictionaries(NNonBlockingDialog):
         self.buttonBox.rejected.connect(self.reject)
 
         # Assemble
-        self.innerBox = QVBoxLayout()
-        self.innerBox.addWidget(self.huInfo)
-        self.innerBox.addLayout(self.huPathBox)
-        self.innerBox.addLayout(self.huAddBox)
-        self.innerBox.addSpacing(8)
-        self.innerBox.addWidget(self.inInfo)
-        self.innerBox.addLayout(self.inBox)
-        self.innerBox.addWidget(self.infoBox)
-        self.innerBox.setSpacing(4)
-
         self.outerBox = QVBoxLayout()
-        self.outerBox.addLayout(self.innerBox, 0)
-        self.outerBox.addStretch(1)
+        self.outerBox.addWidget(self.huInfo, 0)
+        self.outerBox.addLayout(self.huPathBox, 0)
+        self.outerBox.addLayout(self.huAddBox, 0)
+        self.outerBox.addSpacing(8)
+        self.outerBox.addWidget(self.inInfo, 0)
+        self.outerBox.addLayout(self.inBox, 0)
+        self.outerBox.addWidget(self.infoBox, 1)
+        self.outerBox.addSpacing(8)
         self.outerBox.addWidget(self.buttonBox, 0)
-        self.outerBox.setSpacing(16)
 
         self.setLayout(self.outerBox)
 
@@ -248,8 +242,8 @@ class GuiDictionaries(NNonBlockingDialog):
         cursor.movePosition(QTextCursor.MoveOperation.End)
         if cursor.position() > 0:
             cursor.insertText("\n")
-        textCol = cssCol(SHARED.theme.errorText if err else self.palette().text().color())
-        cursor.insertHtml(f"<font style='color: {textCol}'>{text}</font>")
+        textCol = SHARED.theme.errorText if err else self.palette().text().color()
+        cursor.insertHtml(f"<font style='color: {textCol.name(QtHexArgb)}'>{text}</font>")
         cursor.movePosition(QTextCursor.MoveOperation.End)
         cursor.deleteChar()
         self.infoBox.setTextCursor(cursor)
diff --git a/novelwriter/tools/welcome.py b/novelwriter/tools/welcome.py
index 287fd416..4d2a0679 100644
--- a/novelwriter/tools/welcome.py
+++ b/novelwriter/tools/welcome.py
@@ -40,7 +40,7 @@ from PyQt6.QtWidgets import (
 )
 
 from novelwriter import CONFIG, SHARED
-from novelwriter.common import cssCol, formatInt, makeFileNameSafe, qtAddAction, qtLambda
+from novelwriter.common import formatInt, makeFileNameSafe, qtAddAction, qtLambda
 from novelwriter.constants import nwFiles
 from novelwriter.core.coretools import ProjectBuilder
 from novelwriter.enum import nwItemClass
@@ -48,7 +48,7 @@ from novelwriter.extensions.configlayout import NWrappedWidgetBox
 from novelwriter.extensions.modified import NDialog, NIconToolButton, NSpinBox
 from novelwriter.extensions.switch import NSwitch
 from novelwriter.extensions.versioninfo import VersionInfoWidget
-from novelwriter.types import QtAlignLeft, QtAlignRightTop, QtScrollAsNeeded, QtSelected
+from novelwriter.types import QtAlignLeft, QtAlignRightTop, QtHexArgb, QtScrollAsNeeded, QtSelected
 
 logger = logging.getLogger(__name__)
 
@@ -301,7 +301,9 @@ class _OpenProjectPage(QWidget):
 
         self._selectFirstItem()
 
-        baseCol = cssCol(self.palette().base().color(), PANEL_ALPHA)
+        base = self.palette().base().color()
+        base.setAlpha(PANEL_ALPHA)
+        baseCol = base.name(QtHexArgb)
         self.setStyleSheet(
             f"QListView {{border: none; background: {baseCol};}} "
             f"QLineEdit {{border: none; background: {baseCol}; padding: 4px;}} "
@@ -507,7 +509,9 @@ class _NewProjectPage(QWidget):
         # Styles
         # ======
 
-        baseCol = cssCol(self.palette().base().color(), PANEL_ALPHA)
+        base = self.palette().base().color()
+        base.setAlpha(PANEL_ALPHA)
+        baseCol = base.name(QtHexArgb)
         self.setStyleSheet(
             f"QScrollArea {{border: none; background: {baseCol};}} "
             f"_NewProjectForm {{border: none; background: {baseCol};}} "
diff --git a/tests/test_base/test_base_common.py b/tests/test_base/test_base_common.py
index 5bfe2723..7e03b895 100644
--- a/tests/test_base/test_base_common.py
+++ b/tests/test_base/test_base_common.py
@@ -28,18 +28,17 @@ from xml.etree import ElementTree as ET
 import pytest
 
 from PyQt6.QtCore import QMimeData, QUrl
-from PyQt6.QtGui import QColor, QDesktopServices, QFont, QFontDatabase, QFontInfo
+from PyQt6.QtGui import QDesktopServices, QFont, QFontDatabase, QFontInfo
 
 from novelwriter.common import (
     NWConfigParser, checkBool, checkFloat, checkInt, checkIntTuple, checkPath,
-    checkString, checkStringNone, checkUuid, compact, cssCol,
-    decodeMimeHandles, describeFont, elide, encodeMimeHandles, firstFloat,
-    fontMatcher, formatFileFilter, formatInt, formatTime, formatTimeStamp,
-    formatVersion, fuzzyTime, getFileSize, hexToInt, isHandle, isItemClass,
-    isItemLayout, isItemType, isListInstance, isTitleTag, jsonEncode,
-    makeFileNameSafe, minmax, numberToRoman, openExternalPath, readTextFile,
-    simplified, transferCase, uniqueCompact, xmlElement, xmlIndent, xmlSubElem,
-    yesNo
+    checkString, checkStringNone, checkUuid, compact, decodeMimeHandles,
+    describeFont, elide, encodeMimeHandles, firstFloat, fontMatcher,
+    formatFileFilter, formatInt, formatTime, formatTimeStamp, formatVersion,
+    fuzzyTime, getFileSize, hexToInt, isHandle, isItemClass, isItemLayout,
+    isItemType, isListInstance, isTitleTag, jsonEncode, makeFileNameSafe,
+    minmax, numberToRoman, openExternalPath, readTextFile, simplified,
+    transferCase, uniqueCompact, xmlElement, xmlIndent, xmlSubElem, yesNo
 )
 
 from tests.mocked import causeOSError
@@ -512,13 +511,6 @@ def testBaseCommon_numberToRoman():
     assert numberToRoman(999, True) == "cmxcix"
 
 
-@pytest.mark.base
-def testBaseCommon_cssCol():
-    """Test the cssCol function."""
-    assert cssCol(QColor(0, 0, 0, 0)) == "rgba(0, 0, 0, 0)"
-    assert cssCol(QColor(10, 20, 30, 40)) == "rgba(10, 20, 30, 40)"
-
-
 @pytest.mark.base
 def testBaseCommon_describeFont():
     """Test the describeFont function."""