To cite package ‘hellokitty’ in publications use:

  Keller A (2026). _hellokitty: A Hello Kitty Color Palette Generator_.
  R package version 0.1, <https://github.com/abigailkeller/hellokitty>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {hellokitty: A Hello Kitty Color Palette Generator},
    author = {Abigail Keller},
    year = {2026},
    note = {R package version 0.1},
    url = {https://github.com/abigailkeller/hellokitty},
  }