diff --git a/packages/ui-toolkit/src/darkenLighten.js b/packages/ui-toolkit/src/darkenLighten.js
index 2641017ebe3a5ef44785db046a57929cb60567ab..a2abbd9149bb2eb8d5bab8f757ed1cb3dc2c3c50 100644
--- a/packages/ui-toolkit/src/darkenLighten.js
+++ b/packages/ui-toolkit/src/darkenLighten.js
@@ -33,7 +33,7 @@ const darkenLighten = (original, percent, props, dark) => {
   let converted
   try {
     converted = Color(color)
-  } catch {
+  } catch (_) {
     converted = Color('black')
   }