diff --git a/src/common/davcollectionsfetchjob.h b/src/common/davcollectionsfetchjob.h
--- a/src/common/davcollectionsfetchjob.h
+++ b/src/common/davcollectionsfetchjob.h
@@ -78,6 +78,7 @@
     void collectionsFetchFinished(KJob *);
     void doCollectionsFetch(const QUrl &url);
     void subjobFinished();
+    QColor colorFromText(QString colorValue);
 
     DavUrl mUrl;
     DavCollection::List mCollections;
diff --git a/src/common/davcollectionsfetchjob.cpp b/src/common/davcollectionsfetchjob.cpp
--- a/src/common/davcollectionsfetchjob.cpp
+++ b/src/common/davcollectionsfetchjob.cpp
@@ -299,10 +299,7 @@
                 const QDomElement colorElement = Utils::firstChildElementNS(propElement, QStringLiteral("http://apple.com/ns/ical/"), QStringLiteral("calendar-color"));
                 QColor color;
                 if (!colorElement.isNull()) {
-                    QString colorValue = colorElement.text();
-                    if (QColor::isValidColor(colorValue)) {
-                        color.setNamedColor(colorValue);
-                    }
+                    color = this->colorFromText(colorElement.text());
                 }
 
                 // extract allowed content types
@@ -346,3 +343,25 @@
     }
 }
 
+QColor DavCollectionsFetchJob::colorFromText(QString colorValue) {
+    // Color is of type "#RRGGBB" or "#RRGGBBAA"
+    if (colorValue.size() < 7) {
+        return QColor();
+    }
+
+    // If no alpha channel, define it as FF
+    if (colorValue.size() == 7) {
+        colorValue.append(QStringLiteral("FF"));
+    }
+
+    QList<int> intColorValues;
+    bool correctConversion;
+    for (int i = 0 ; i < 4 ; i++) {
+        intColorValues[i] = colorValue.mid(1 + 2*i, 2).toInt(&correctConversion, 16);
+        if (!correctConversion) {
+            return QColor();
+        }
+    }
+
+    return QColor(intColorValues[0], intColorValues[1], intColorValues[2], intColorValues[3]);
+}