diff --git a/app/admin/page.tsx b/app/admin/page.tsx
index 2b821f2..1362184 100644
--- a/app/admin/page.tsx
+++ b/app/admin/page.tsx
@@ -259,6 +259,13 @@ export default function AdminDashboard() {
   const [savingPortal, setSavingPortal] = useState(false);
   const [uploading, setUploading] = useState<{ [key: string]: boolean }>({});
 
+  // Hex input per il theme color: stato locale che resta libero durante la digitazione,
+  // committa su portal.themeColor solo quando la stringa e' un hex completo valido.
+  const [hexInput, setHexInput] = useState<string>('#1e3a8a');
+  useEffect(() => {
+    if (portal.themeColor) setHexInput(portal.themeColor);
+  }, [portal.themeColor]);
+
   // NEW UI STATES: Toast and Confirm Dialog
   const [toast, setToast] = useState<{ message: string; type: 'success' | 'error' } | null>(null);
   const [confirmDialog, setConfirmDialog] = useState<{ message: string, onConfirm: () => void } | null>(null);
@@ -836,7 +843,25 @@ export default function AdminDashboard() {
                       <label className="block text-sm font-semibold text-gray-700 mb-1">Theme Color</label>
                       <div className="flex items-center gap-4">
                         <input type="color" value={portal.themeColor || '#1e3a8a'} onChange={e => setPortal({...portal, themeColor: e.target.value})} className="h-12 w-12 rounded cursor-pointer border-0 p-0" />
-                        <span className="text-gray-900 font-mono font-medium">{portal.themeColor || '#1e3a8a'}</span>
+                        <input
+                          type="text"
+                          value={hexInput}
+                          onChange={e => {
+                            const v = e.target.value;
+                            setHexInput(v);
+                            // Commit a portal.themeColor solo se la stringa e' un hex pieno e valido.
+                            if (/^#[0-9a-fA-F]{6}$/.test(v)) setPortal({ ...portal, themeColor: v.toLowerCase() });
+                          }}
+                          onBlur={() => {
+                            // Se l'utente esce dal campo con un valore non valido, ripristina l'ultimo valore noto.
+                            if (!/^#[0-9a-fA-F]{6}$/.test(hexInput)) setHexInput(portal.themeColor || '#1e3a8a');
+                          }}
+                          maxLength={7}
+                          spellCheck={false}
+                          placeholder="#RRGGBB"
+                          aria-label="Theme color hex"
+                          className={`font-mono text-sm px-3 py-2 rounded border outline-none focus:ring-2 focus:ring-blue-500 w-32 ${/^#[0-9a-fA-F]{6}$/.test(hexInput) ? 'border-gray-300 text-gray-900' : 'border-red-500 text-red-600'}`}
+                        />
                       </div>
                     </div>