First published in 1814, *Werner’s Nomenclature of Colours* is a taxonomically organized guide to color in the natural world. Compiled by German geologist Abraham Gottlob Werner, the book was expanded and enhanced in 1821 by Patrick Syme, who added color swatches and further color descriptions, bringing the total number of classified hues to 110. The resulting resource has been invaluable not only to artists and designers but also to zoologists, botanists, mineralogists, anatomists, and explorers, including Charles Darwin on the famous voyage of the Beagle.