Pantone LLC is a leader in color management within the industry. It is well known for its Pantone Matching System (PMS),  formulas to define and label the color spectrum for various media in order to assist color specialists, printers, and designers. PMS is used primarily for print projects, but also for colored paint, fabric and plastics. Pantone has developed color paddles based upon their formulas (one for Solid Matte colors is shown below). The paddles are very helpful tools that provide a resource of defined and numbered colors for standard reference. Professionals can accurately and consistently reference color by number (e.g., Red 200U) during all stages of creation.

A sample of the Pantone Solid-Matte Color Guide.
A sample of the Pantone® Solid Matte Formula Guide