diff --git a/contributing/css.rst b/contributing/css.rst
index 88c163e09a7b..d7b047e1695c 100644
--- a/contributing/css.rst
+++ b/contributing/css.rst
@@ -19,3 +19,27 @@ Details:
   being generated
 - ``admin/css/debug-toolbar/toolbar.scss`` is the SASS source
 - ``system/Debug/Toolbar/Views/toolbar.css`` is he CSS destination
+
+Color scheme
+============
+
+**Themes**
+
+Dark: `#252525` / `rgb(37, 37, 37)`
+Light: `#FFFFFF` / `rgb(255, 255, 255)`
+
+**Glossy colors**
+
+Blue: `#5BC0DE` / `rgb(91, 192, 222)`
+Gray: `#434343` / `rgb(67, 67, 67)`
+Green: `#9ACE25` / `rgb(154, 206, 37)`
+Orange: `#DD8615` / `rgb(221, 134, 21)`
+Red: `#DD4814` / `rgb(221, 72, 20)`
+
+**Matt colors**
+
+Blue: `#D8EAF0` / `rgb(216, 234, 240)`
+Gray: `#DFDFDF` / `rgb(223, 223, 223)`
+Green: `#DFF0D8` / `rgb(223, 240, 216)`
+Orange: `#FDC894` / `rgb(253, 200, 148)`
+Red: `#EF9090` / `rgb(239, 144, 144)`