Package: palettecore
Title: Derive, Optimise and Audit a Scientific Colour Palette from One
        Seed Colour
Version: 0.4.1
Authors@R: person("Heidi Helena", "Andersén", role = c("aut", "cre"),
    email = "andersenheidihelena@gmail.com",
    comment = c(ORCID = "0000-0001-5923-5865"))
Description: Generates sequential, diverging and categorical colour palettes
    from a single seed colour in OKLCH (the cylindrical lightness-chroma-hue
    representation of the Oklab perceptual colour space), with spacing
    measured by the CIEDE2000 colour-difference formula of the International
    Commission on Illumination. Audits every palette under simulated
    colour-vision deficiency, greyscale conversion, the standard Red Green
    Blue (sRGB) gamut and Web Content Accessibility Guidelines (WCAG)
    contrast. Colour-vision deficiency is
    simulated at severity 1.0 with the model of Machado, Oliveira and
    Fernandes (2009) <doi:10.1109/TVCG.2009.113>; the design rationale
    follows Crameri, Shephard and Heron (2020) <doi:10.1038/s41467-020-19160-7>.
    Mirrors the 'Python' reference implementation maintained in the same
    repository and is validated against shared parity fixtures. Thresholds
    are configurable design rules, not established accessibility cut-offs.
License: Apache License (>= 2)
Encoding: UTF-8
RoxygenNote: 7.3.3
Depends: R (>= 4.1)
Imports: stats, utils
Suggests: ggplot2, jsonlite
URL: https://github.com/heidihelena/palettecore
BugReports: https://github.com/heidihelena/palettecore/issues
NeedsCompilation: no
Packaged: 2026-08-03 20:36:25 UTC; root
Author: Heidi Helena Andersén [aut, cre] (ORCID:
    <https://orcid.org/0000-0001-5923-5865>)
Maintainer: Heidi Helena Andersén <andersenheidihelena@gmail.com>
Repository: CRAN
Date/Publication: 2026-08-09 08:10:02 UTC
Built: R 4.6.0; ; 2026-08-09 09:31:26 UTC; unix
