color scale

https://doi.org/10.1351/goldbook.CT07342
Series of ordered numbers that represents observable gradations of a given attribute or gradations of a combination of attributes of color perception.
Source:
PAC, 2007, 79, 293. (Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)) on page 315 [Terms] [Paper]