minor fixes.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/Utils.ts b/src/Utils.ts
index e11f1154e..db33875ea 100644
--- a/src/Utils.ts
+++ b/src/Utils.ts
@@ -576,7 +576,7 @@ export function simulateMouseClick(element: Element | null | undefined, x: numbe
 export function lightOrDark(color: any) {
     const nonAlphaColor = color.startsWith("#") ? (color as string).substring(0, 7) :
         color.startsWith("rgba") ? color.replace(/,.[^,]*\)/, ")").replace("rgba", "rgb") : color;
-    const col = Color(nonAlphaColor).rgb();
+    const col = Color(nonAlphaColor.toLowerCase()).rgb();
     const colsum = (col.red() + col.green() + col.blue());
     if (colsum / col.alpha() > 400 || col.alpha() < 0.25) return Colors.DARK_GRAY;
     else return Colors.WHITE;