Vibrancy in certain areas

Is it possible to adjust the vibrancy of a single area in a photo? I had a subject wearing a bright pink shirt in an otherwise fairly neutral area. I’d like to tone down the bright color without dulling the color of the rest of the photo.

Hi!

Have you played with the Lab* adjustments?

A little bit, but I really don’t understand how they work

http://rawpedia.rawtherapee.com/Lab_Adjustments

Your question actually sounds a bit like mine, a year ago.
Some of the answers I got might very well help you, too:

Have fun!
Claes in Lund, Sweden