To cite khroma in publications use:

  Frerebeau N (2024). _khroma: Colour Schemes for Scientific Data
  Visualization_. Université Bordeaux Montaigne, Pessac, France.
  doi:10.5281/zenodo.1472077 <https://doi.org/10.5281/zenodo.1472077>,
  R package version 1.14.0, <https://packages.tesselle.org/khroma/>.

A BibTeX entry for LaTeX users is

  @Manual{,
    author = {Nicolas Frerebeau},
    title = {{khroma: Colour Schemes for Scientific Data Visualization}},
    year = {2024},
    organization = {Université Bordeaux Montaigne},
    address = {Pessac, France},
    note = {R package version 1.14.0},
    doi = {10.5281/zenodo.1472077},
    url = {https://packages.tesselle.org/khroma/},
  }

This package is a part of the tesselle project
<https://www.tesselle.org>.