diff --git a/src/util/scaleRGB.js b/src/util/scaleRGB.js
new file mode 100644
index 00000000..de2cf8db
--- /dev/null
+++ b/src/util/scaleRGB.js
@@ -0,0 +1,10 @@
+export const scaleRGB = (input) => {
+  const outputMax = 1;
+  const outputMin = 0;
+
+  const inputMax = 255;
+  const inputMin = 0;
+
+  const percent = (input - inputMin) / (inputMax - inputMin);
+  return percent * (outputMax - outputMin) + outputMin;
+}