Oh my!  Bouquet of Hearts looks fabulous anywhere! This color palette feels vibrant and will uplift any room. 

I recommend a 3" mat for a light airy feel. Here's an example of how this would look on a light, white wall. 

Or on a darker wall, the mat will open up the space to reflect light around it. 

For more vibrant color, frame it without a mat with a moulding that matches your style.