To cite package ‘colourspace’ in publications use:

  Cohen Y (2026). _colourspace: Convert from One Colour Space to
  Another, Print a Ready-to-Paste Modern 'CSS' Syntax_. R package
  version 0.1.1, <https://github.com/iamyannc/colourspace>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {colourspace: Convert from One Colour Space to Another, Print a Ready-to-Paste
Modern 'CSS' Syntax},
    author = {Yann Cohen},
    year = {2026},
    note = {R package version 0.1.1},
    url = {https://github.com/iamyannc/colourspace},
  }