Have you seen this Colossal post
? This is completely amazing! Over 300 years ago (271 years before the first Pantone Color Guide
existed), Dutch artist, "A. Boogert" wrote about the use of color in art. In an 800-page book, Boogert describes every color imaginable at the time, and included color swatches as well. This was an incredible find by historian Erik Kwakkel
who translated part of the introduction.
The book was called the “Traité des couleurs servant à la peinture à l’eau” and you can find a high definition images here.
Source: Erik Kwakkel via Colossal