Github integration (#6414)

Co-authored-by: Tom Moor <tom.moor@gmail.com>

shared/utils/color.ts

@@ -35,3 +35,17 @@ export const stringToColor = (input: string) => {
  */
 export const toRGB = (color: string) =>
   Object.values(parseToRgb(color)).join(", ");
+
+/**
+ * Returns the text color that contrasts the given background color
+ *
+ * @param background - A color string
+ * @returns A color string
+ */
+export const getTextColor = (background: string) => {
+  const r = parseInt(background.substring(1, 3), 16);
+  const g = parseInt(background.substring(3, 5), 16);
+  const b = parseInt(background.substring(5, 7), 16);
+  const yiq = (r * 299 + g * 587 + b * 114) / 1000;
+  return yiq >= 128 ? "black" : "white";
+};