Yes. Either your painting company you plan hiring will provide paint samples in obvious places, or personally going to chosen paint store yourself. Most reputable paint contractors will buy samples. Applying on selected areas for your approval, upon a signed contract. Either way, you really should have paint color samples for exact areas you wish painted. Reason is inside, carpet, draperies, and furniture can give your color a different hue. Outside, roof, brick, and landscape can make a paint color look differently too. Seeing your new paint colors actually on your walls, inside or out is your best rule of thumb, having no surprises.