diff --git a/src/worksheet_html_renderer.py b/src/worksheet_html_renderer.py
index e982ec1..a00cde4 100644
--- a/src/worksheet_html_renderer.py
+++ b/src/worksheet_html_renderer.py
@@ -79,6 +79,7 @@ def get_day_palette(day_label: str) -> tuple[str, str]:
   @media print {
     body { background: white; padding: 0; }
     .page { padding: 0; box-shadow: none; margin: 0; }
+    * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
   }
 
   /* Day header bar */