From 78ce5f233145b8beda522aa6c2f2235dfb8f8d62 Mon Sep 17 00:00:00 2001
From: ambdroid <61042504+ambdroid@users.noreply.github.com>
Date: Sun, 3 Sep 2023 02:41:55 -0400
Subject: [PATCH] Fix IndexError when using empty string in Colour.from_str

Co-authored-by: Danny <1695103+Rapptz@users.noreply.github.com>
---
 discord/colour.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/discord/colour.py b/discord/colour.py
index e640f9df4..5772b145d 100644
--- a/discord/colour.py
+++ b/discord/colour.py
@@ -196,6 +196,9 @@ class Colour:
             The string could not be converted into a colour.
         """
 
+        if not value:
+            raise ValueError('unknown colour format given')
+
         if value[0] == '#':
             return parse_hex_number(value[1:])