I read a fun little way of generating good colour schemes.
Take a colour wheel, lay it on your work surface. Put a marker (ie a penny) on the colours you have decided to use, in your case the tan and burgundy. I would say tan is sort of a pale warm yellow, for the purpose of this exercise.
Now place markers to "balance off" the position of your burgundy and yellow markers...in this case that might mean I place two more markers, on the purple-blue and on the blue-green.
If you only want one other colour, the one midway across the circle from the burgundy and yellow is turquoise. The one between them is red-orange. You could add red-orange and turquoise to the burgundy and tan...that would look fab!
As long as you maintain some kind of symmetry in arranging the markers on the colour wheel, your scheme will work!