diff --git a/src/utils/irc.py b/src/utils/irc.py
index df04a885..d8609bf9 100644
--- a/src/utils/irc.py
+++ b/src/utils/irc.py
@@ -161,7 +161,7 @@ def _color_tokens(s: str) -> typing.List[str]:
             if can_add:
                 current_color = background if is_background else foreground
                 if current_color:
-                    can_add = int(char) < 6 or int(current_color) < 2
+                    can_add = int(current_color + char) <= 15
 
             if can_add:
                 if is_background: