A Color Notation (1905) by Albert H. Munsell sets out the influential color system that bears his name, organizing color by the three measurable qualities of hue, value, and chroma. A painter and teacher, Munsell sought to replace vague color names with a precise, ordered notation that artists, manufacturers, and educators could share.
The book explains the logic of his color sphere and demonstrates how any color can be located and described within it. The Munsell system became a foundation of modern color science and is still used in fields from art education to industry. This free EPUB download is cleanly formatted for any e-reader.