diff --git a/css/css-color/webkit-focus-ring-color.tentative.html b/css/css-color/webkit-focus-ring-color.tentative.html
new file mode 100644
index 00000000000000..b79e16dbe66082
--- /dev/null
+++ b/css/css-color/webkit-focus-ring-color.tentative.html
@@ -0,0 +1,10 @@
+<!doctype html>
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1718934">
+<title>-webkit-focus-ring-color is supported for compat</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+test(function() {
+  assert_true(CSS.supports("color", "-webkit-focus-ring-color"));
+});
+</script>
