diff --git a/PluralKit.Bot/Errors.cs b/PluralKit.Bot/Errors.cs
index 5ff000e5..ab93fd16 100644
--- a/PluralKit.Bot/Errors.cs
+++ b/PluralKit.Bot/Errors.cs
@@ -22,7 +22,7 @@ namespace PluralKit.Bot {
         public static PKError MemberNameTooLongError(int length) => new PKError($"Member name too long ({length}/{Limits.MaxMemberNameLength} characters).");
         public static PKError MemberPronounsTooLongError(int length) => new PKError($"Member pronouns too long ({length}/{Limits.MaxMemberNameLength} characters).");
         
-        public static PKError InvalidColorError(string color) => new PKError($"\"{color}\" is not a valid color. Color must be in hex format (eg. #ff0000).");
+        public static PKError InvalidColorError(string color) => new PKError($"\"{color}\" is not a valid color. Color must be in 6-digit RGB hex format (eg. #ff0000).");
         public static PKError BirthdayParseError(string birthday) => new PKError($"\"{birthday}\" could not be parsed as a valid date. Try a format like \"2016-12-24\" or \"May 3 1996\".");
         public static PKError ProxyMustHaveText => new PKSyntaxError("Example proxy message must contain the string 'text'.");
         public static PKError ProxyMultipleText => new PKSyntaxError("Example proxy message must contain the string 'text' exactly once.");