diff --git a/snippets/RGBToHSB.md b/snippets/RGBToHSB.md
index c80d1c372..e70d52e97 100644
--- a/snippets/RGBToHSB.md
+++ b/snippets/RGBToHSB.md
@@ -19,7 +19,7 @@ const RGBToHSB = (r, g, b) => {
   const v = Math.max(r, g, b),
     n = v - Math.min(r, g, b);
   const h =
-    n && v === r ? (g - b) / n : v === g ? 2 + (b - r) / n : 4 + (r - g) / n;
+    n === 0 ? 0 : n && v === r ? (g - b) / n : v === g ? 2 + (b - r) / n : 4 + (r - g) / n;
   return [60 * (h < 0 ? h + 6 : h), v && (n / v) * 100, v * 100];
 };
 ```