diff --git a/config.def.h b/config.def.h
index d7c11a1..699f5b6 100644
--- a/config.def.h
+++ b/config.def.h
@@ -5,7 +5,7 @@ static const char *group = "nogroup";
 static const char *colorname[NUMCOLS] = {
 	[INIT] =   "black",     /* after initialization */
 	[INPUT] =  "#005577",   /* during input */
-	[FAILED] = "#CC3333",   /* wrong password */
+	[FAILED] = "#cc3333",   /* wrong password */
 };
 
 /* lock screen opacity */
diff --git a/config.h b/config.h
index 125fb6b..664d5d4 100644
--- a/config.h
+++ b/config.h
@@ -4,8 +4,8 @@ static const char *group = "nobody";
 
 static const char *colorname[NUMCOLS] = {
 	[INIT] =   "#000000",   /* after initialization */
-	[INPUT] =  "#282A36",   /* during input */
-	[FAILED] = "#FF5555",   /* wrong password */
+	[INPUT] =  "#282a36",   /* during input */
+	[FAILED] = "#ff5555",   /* wrong password */
 };
 
 /* lock screen opacity */