Soak up spilled coffee with a towel while the coffee is still wet. If you let the coffee soak into the couch, the stain becomes much more difficult to remove.
Combine 2 cups of cold water with 1 tablespoon of liquid dish soap. Wet a white towel with the soapy water.
Blot the coffee spill with the soapy towel. The coffee stain starts to lighten. As the towel soaks up the coffee, wring out the liquid into a bowl or sink.
Apply more soapy water to the coffee until the stain is no longer visible. Wet a clean towel with cool water, then blot the couch to remove the soap.
Use dry-cleaning solvent on the stain if dish detergent does not fully remove it.