diff --git a/README.md b/README.md
index e6814a3..64861fc 100644
--- a/README.md
+++ b/README.md
@@ -81,4 +81,5 @@ These are neutral tones between black and bright white for adjusting contrast an
 | ![#86929d](https://placehold.co/100/86929d/86929d) | #86929d | dark 60 |
 | ![#9daeb6](https://placehold.co/100/9daeb6/9daeb6) | #9daeb6 | bright 70 |
 | ![#b3cbcf](https://placehold.co/100/b3cbcf/b3cbcf) | #b3cbcf | bright 80 |
-  
+
+Copyright (c) 2024 - Vuong Hoang