To cite `palette` in publications use:

  Kenny C (2024). _palette: Color Scheme Helpers_. R package,
  <https://christophertkenny.com/palette/>.

A BibTeX entry for LaTeX users is

  @Manual{palette,
    title = {{palette}: Color Scheme Helpers},
    author = {Christopher T. Kenny},
    year = {2024},
    note = {R package},
    url = {https://christophertkenny.com/palette/},
  }