diff --git a/Schemas/cta-box-sidebar.json b/Schemas/cta-box-sidebar.json
index d26389bb..645eb54f 100644
--- a/Schemas/cta-box-sidebar.json
+++ b/Schemas/cta-box-sidebar.json
@@ -153,8 +153,9 @@
         "button_text_color": {
           "type": "color",
           "label": "Color texto botón",
-          "default": "#FF8600",
-          "editable": true
+          "default": "#0E2337",
+          "editable": true,
+          "description": "Fase 4.4 Accesibilidad: navy-dark para contraste WCAG AA sobre fondo blanco"
         },
         "button_hover_background": {
           "type": "color",