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: 2026-10-08 10:39:35 UTC; root
Author: Heidi Helena Andersén [aut, cre] (ORCID:
        <https://orcid.org/0000-0001-5923-5865>)
Maintainer: Heidi Helena Andersén <andersenheidihelena@gmail.com>
Repository: https://cran.r-universe.dev
Date/Publication: 2026-08-09 08:10:02 UTC
RemoteUrl: https://github.com/cran/palettecore
RemoteRef: HEAD
RemoteSha: 217f754e1c98358de9d54ad62cfca7f8b4c7b78a