diff --git a/src/docs/user/userguide/remarkup.diviner b/src/docs/user/userguide/remarkup.diviner
--- a/src/docs/user/userguide/remarkup.diviner
+++ b/src/docs/user/userguide/remarkup.diviner
@@ -20,6 +20,7 @@
 
   **bold** //italic// `monospaced` ##monospaced## ~~deleted~~ __underlined__
   !!highlighted!!
+  {#FA8072}                 # RGB hex code in background
   D123 T123 rX123           # Link to Objects
   {D123} {T123}             # Link to Objects (Full Name)
   {F123}                    # Embed Images
@@ -334,6 +335,12 @@
 On an entirely different topic, ...
 ```
 
+RGB hex codes
+=============
+
+You can display RGB hex code by using `{#RRGGBB}`. This will add a formatted
+monospace text with background color set to specified RGB hex code. For example,
+`{#FA8072}` will be shown as {#FA8072}.
 
 = Linking URIs =