Sort System.Media.Colors according to position in visible spectrum

Question

Whats the quickest/easiest way to sort the colors in the System.Media.Colors according to its position in the visible spectrum (red to blue or blue to red doesn't matter) ?

EDIT:

Here is the result of the sort (hue->saturation->brightness):

This is probably technically correct but visually it still isn't. Can someone throw light on what the problem is?