diff --git a/pe/rgb.erl b/pe/rgb.erl
new file mode 100644
index 0000000..56ecf7f
--- /dev/null
+++ b/pe/rgb.erl
@@ -0,0 +1,8 @@
+-module(rgb).
+-export([pack16/1, unpack16/1]).
+
+pack16({Red, Green, Blue}) ->
+    <<Red:5, Green:6, Blue:5>>.
+
+unpack16(<<Red:5, Green:6, Blue:5>>) ->
+    {Red, Green, Blue}.