diff --git a/style/tailwind.css b/style/tailwind.css
index 848b7b3..ba36b04 100644
--- a/style/tailwind.css
+++ b/style/tailwind.css
@@ -10,6 +10,11 @@
 @source not "*";
 @source "./src/**/*.{rs,html,css}";
 
+@theme {
+    /* Copied out of DaisyUI theme, which doesn't make the color available */
+    --color-soft-error: color-mix(in oklab, var(--color-error, var(--color-base-content)) 8%, var(--color-base-100));
+}
+
 @layer utilities {
     .interact {
         @apply cursor-pointer;