improve accessibility even more

assets/css/app.scss

@@ -36,7 +36,7 @@ $fa-font-path: "@fortawesome/fontawesome-free/webfonts";
 }
 
 .invalid-feedback {
-  color: #a94442;
+  color: #f36c69;
   display: block;
   margin: -1rem 0 2rem;
 }

assets/css/components.scss

@@ -45,8 +45,8 @@
   }
 
   .btn-alert {
-    @apply bg-red-700 active:bg-red-900;
-    @apply border-red-700 active:border-red-900;
+    @apply bg-red-800 active:bg-red-900;
+    @apply border-red-800 active:border-red-900;
     @apply text-primary-300;
   }