diff --git a/index.html b/index.html
index 96ca674..9f35739 100644
--- a/index.html
+++ b/index.html
@@ -8,7 +8,7 @@
 		<script type="module">
 			import {formatDate} from './dist/index.mjs';
 
-			console.log(formatDate('D MMM, YYYY'));
+			console.log(formatDate('YYYY-01-01'));
 		</script>
 	</body>
 </html>
diff --git a/package.json b/package.json
index 1f24d38..7ae5550 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@ztimson/utils",
-	"version": "0.23.8",
+	"version": "0.23.9",
 	"description": "Utility library",
 	"author": "Zak Timson",
 	"license": "MIT",
diff --git a/src/color.ts b/src/color.ts
index 9011690..36fa6e4 100644
--- a/src/color.ts
+++ b/src/color.ts
@@ -4,7 +4,7 @@
  * @return {"white" | "black"} Color with the most contrast
  */
 export function blackOrWhite(background: string): 'white' | 'black' {
-	const exploded = background.match(background.length >= 6 ? /\w\w/g : /\w/g);
+	const exploded = background?.match(background.length >= 6 ? /\w\w/g : /\w/g);
 	if(!exploded) return 'black';
 	const [r, g, b] = exploded.map(hex => parseInt(hex, 16));
 	const luminance = (0.299 * r + 0.587 * g + 0.114 * b) / 255;