const char* hex = "FF09FE";
  char rs[2] = {hex[0], hex[1]};
  char gs[2] = {hex[2], hex[3]};
  char bs[2] = {hex[4], hex[5]};
  int r = (int)strtol(rs, NULL, 16);
  int g = (int)strtol(gs, NULL, 16);
  int b = (int)strtol(bs, NULL, 16);

  double rgb[3] = {(double)r/255.0, (double)g/255.0,(double)b/255.0};

  std::cout << "R: " << rgb[0] << " G: "<< rgb[1] << " B: " << rgb[2];