diff --git a/lib/dom-styles-reader.js b/lib/dom-styles-reader.js
index e14cc323..d0be919c 100644
--- a/lib/dom-styles-reader.js
+++ b/lib/dom-styles-reader.js
@@ -148,7 +148,7 @@ export default class DOMStylesReader {
 
 const dotRegexp = /\.+/g
 const rgbExtractRegexp = /rgb(a?)\((\d+), (\d+), (\d+)(, (\d+(\.\d+)?))?\)/
-const hueRegexp = /hue-rotate\((\d+)deg\)/
+const hueRegexp = /hue-rotate\((-?\d+)deg\)/
 
 /**
  * Computes the output color of `value` with a rotated hue defined