Pantone color system
Pantone Color System and Cartographic Design
As all ink available around the world is not produced by one single company, a systemized color standard such as Pantone becomes useful. In cartography and map design, the Pantone Color System or Pantone Matching System makes it easy to find the same color over and over again by referring to the assigned formula for each color. In order to match colors from monitor to paper, PANTONE provides a variety of swatches and chip books.  Cartographers can go back and use a particular and unique color as many times as they please. The Pantone Color System can also be helpful in large projects where the same color needs to be used by multiple cartographers remotely. Furthermore, it eliminates any confusion in color identification when it comes to commercial mass printing of maps.
- Pantone, , "Wikipedia"
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- Slocum, T. A., McMaster, R. B., Kessler, F. C., & Howard, H. H. (2009). Thematic Cartography and Geovisualization. (3rd ed., pp. 238-239). Upper Saddle River, NJ: Pearson Education, Inc.
- Pantone, Numbering Explained. 
- The Pantone Matching System - always show your true colors https://www.pantone.com/the-pantone-matching-system, Accessed September 27, 2017