The Color Naming System was an early grammar of color.

In it, colors are created using adjectives and base hues (like "dark blue"), so you won’t ever have to wonder if "steelblue" is darker than "dodgerblue".

You can install the released version of cns from CRAN with:

install.packages("cns")

And the development version from GitHub with:

# install.packages("remotes")
remotes::install_github("nfultz/cns")

library(cns)

barplot(1:3, col=cns('light red', 'red', 'dark purplish red'))