I know Adobe Photoshop can convert color values to LAB (RGB) and then you can get a Pantone color equivalent. I don't know how accurate the paint hue will match something that looks good on a computer screen. Maybe, a paint store will have a computer application that would satisfy your requirements. If you have a sample chip, they can read that and duplicate it.
MontiPora 56-60, M 2 Answers 2 Jun 4, 2011