diff --git a/inc/html.class.php b/inc/html.class.php
index 1ffb67618e1..1a8a702921a 100644
--- a/inc/html.class.php
+++ b/inc/html.class.php
@@ -3044,7 +3044,7 @@ static function showColorField($name, $options=array()) {
       }
       $field_id = Html::cleanId("color_".$name.$p['rand']);
       $output   = "<input type='text' id='$field_id' name='$name' value='".$p['value']."'>";
-      $js       = "$('#$field_id').spectrum();";
+      $js       = "$('#$field_id').spectrum({preferredFormat: 'hex'});";
       $output  .= Html::scriptBlock($js);
 
       if ($p['display']) {