New Post: Get distance between colors

using (MagickImage navy = new MagickImage("xc:navy"))
{
  using (MagickImage blue = new MagickImage("xc:blue"))
  {
    double distance = navy.Compare(blue, Metric.RootMeanSquaredError);
    Console.WriteLine((Quantum.Max * distance).ToString());
    Console.WriteLine(distance.ToString());
  }
}