{ "_id": "6a629911d3420cf5dfdb4065", "Package": "palettecore", "Title": "Derive, Optimise and Audit a Scientific Colour Palette from One\nSeed Colour", "Version": "0.2.2", "Authors@R": "person(\"Heidi Helena\", \"Andersén\", role = c(\"aut\", \"cre\"),\nemail = \"andersenheidihelena@gmail.com\",\ncomment = c(ORCID = \"0000-0001-5923-5865\"))", "Description": "Generates sequential, diverging and categorical colour\npalettes from a single seed colour in OKLCH with CIEDE2000\nspacing, and audits every palette under simulated colour-vision\ndeficiency, greyscale conversion, sRGB gamut and WCAG contrast.\nColour-vision deficiency is simulated at severity 1.0 with the\nmodel of Machado, Oliveira and Fernandes (2009)\n; the design rationale follows\nCrameri, Shephard and Heron (2020)\n. Mirrors the 'Python'\nreference implementation maintained in the same repository and\nis validated against shared parity fixtures. Thresholds are\nconfigurable design rules, not established accessibility\ncut-offs.", "License": "Apache License (>= 2)", "Encoding": "UTF-8", "Roxygen": "list(markdown = TRUE)", "RoxygenNote": "7.3.3", "URL": "https://github.com/heidihelena/palettecore", "BugReports": "https://github.com/heidihelena/palettecore/issues", "Repository": "https://heidihelena.r-universe.dev", "Date/Publication": "2026-07-23 21:52:22 UTC", "RemoteUrl": "https://github.com/heidihelena/palettecore", "RemoteRef": "HEAD", "RemoteSha": "ef9f78d8ff5a96658866f7207b61d70c8c8e5aaf", "RemoteSubdir": "r/palettecore", "NeedsCompilation": "no", "Packaged": { "Date": "2026-07-23 22:40:29 UTC", "User": "root" }, "Author": "Heidi Helena Andersén [aut, cre] (ORCID:\n)", "Maintainer": "Heidi Helena Andersén ", "_user": "heidihelena", "_type": "src", "_file": "palettecore_0.2.2.tar.gz", "_fileid": "https://r2.ropensci.org/db2700ea8c6a4ccfb03eee71451c153f0d6adcd4333280b5ab7c9626bb64dce5", "_filesize": 110565, "_sha256": "db2700ea8c6a4ccfb03eee71451c153f0d6adcd4333280b5ab7c9626bb64dce5", "_expires": "2026-10-31T22:43:28.000Z", "_created": "2026-07-23T22:40:29.000Z", "_published": "2026-07-23T22:43:29.813Z", "_jobs": [ { "job": 89351965553, "time": 138, "config": "linux-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "8580932801" }, { "job": 89351965406, "time": 109, "config": "linux-release-x86_64", "r": "4.6.1", "check": "OK", "artifact": "8580922812" }, { "job": 89351965413, "time": 67, "config": "macos-oldrel-arm64", "r": "4.5.3", "check": "OK", "artifact": "8580908120" }, { "job": 89351965383, "time": 92, "config": "macos-release-arm64", "r": "4.6.1", "check": "OK", "artifact": "8580916674" }, { "job": 89351588894, "time": 130, "config": "source", "r": "4.6.1", "check": "OK", "artifact": "8580883777" }, { "job": 89351965397, "time": 107, "config": "wasm-release", "r": "4.6.0", "check": "OK", "artifact": "8580921808" }, { "job": 89351965426, "time": 71, "config": "windows-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "8580909574" }, { "job": 89351965396, "time": 59, "config": "windows-oldrel-x86_64", "r": "4.5.3", "check": "OK", "artifact": "8580905961" }, { "job": 89351965440, "time": 67, "config": "windows-release-x86_64", "r": "4.6.1", "check": "OK", "artifact": "8580908268" } ], "_host": "GitHub-Actions", "_buildurl": "https://github.com/r-universe/heidihelena/actions/runs/30050563130", "_status": "success", "_upstream": "https://github.com/heidihelena/palettecore", "_commit": { "id": "ef9f78d8ff5a96658866f7207b61d70c8c8e5aaf", "author": "Heidi Andersén ", "committer": "Heidi Andersén ", "message": "v0.2.2: audit the returned HEX colours, input validation, diverging fixes, CI\n\nExternal review (2026-07-24) found the audit ran on internal float RGB\nwhile callers receive 8-bit HEX - quantisation could flip threshold\nresults (e.g. #86DC0A n=12 sequential: reported deuteranopia 6.0 with\nno warning; the returned colours recompute to 5.9, below threshold).\n\n- Quantise to the returned 8-bit colours BEFORE every diagnostic, in\n both languages; audit now describes exactly the palette delivered.\n- anchor=\"exact\" now also snaps diverging palettes (was silently\n sequential-only while reporting anchor: exact).\n- Validate use, threshold names, and threshold values (finite, >= 0);\n a typo no longer looks like a clean audit.\n- Diverging requires n >= 3; new diverging_structure diagnostic (arms\n monotonic, centre interior) with a warning when broken.\n- Precompute CVD simulations in categorical scoring (modest speedup;\n vectorised CIEDE2000 stays on the roadmap).\n- 93 tests (22 new, incl. audit==returned-hexes consistency and the\n reviewer's case); R parity PASS, 9/9 fixtures hex-exact; R CMD check\n clean. New CI workflow: Python 3.10-3.14, artifacts + twine check,\n R parity, R CMD check on push/PR.\n- PEP 639 SPDX license metadata; README: greyscale wording corrected\n to a luminance proxy, install section, roadmap updated.\n\nCo-Authored-By: Claude Fable 5 \n", "time": 1784843542 }, "_maintainer": { "name": "Heidi Helena Andersén", "email": "andersenheidihelena@gmail.com", "orcid": "0000-0001-5923-5865" }, "_distro": "resolute", "_registered": true, "_dependencies": [ { "package": "R", "version": ">= 4.1", "role": "Depends" }, { "package": "stats", "role": "Imports" }, { "package": "utils", "role": "Imports" }, { "package": "ggplot2", "role": "Suggests" }, { "package": "jsonlite", "role": "Suggests" } ], "_owner": "heidihelena", "_selfowned": true, "_usedby": 0, "_updates": [ { "week": "2026-30", "n": 7 } ], "_tags": [ { "name": "v0.2.0", "date": "2026-07-23" }, { "name": "v0.2.1", "date": "2026-07-23" }, { "name": "v0.2.2", "date": "2026-07-23" } ], "_topics": [ "accessibility", "ciede2000", "color", "colorblind", "data-visualization", "oklch", "palette", "python" ], "_stars": 0, "_contributors": [ { "user": "heidihelena", "count": 7, "uuid": 155103098 } ], "_userbio": { "uuid": 155103098, "type": "user", "name": "Heidi Andersen", "followers": 35, "description": "Founder, Vahtian | Thoracic oncologist, pulmonologist, and clinical data analyst | MD, PhD" }, "_downloads": { "count": 0, "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/palettecore" }, "_devurl": "https://github.com/heidihelena/palettecore", "_rbuild": "4.6.1", "_assets": [ "extra/citation.cff", "extra/citation.html", "extra/citation.json", "extra/citation.txt", "extra/contents.json", "extra/palettecore.html", "extra/readme.html", "extra/readme.md", "manual.pdf" ], "_cranurl": false, "_exports": [ "ciede2000", "contrast_ratio", "generate_palette", "hex_to_oklch", "hex_to_srgb", "max_chroma", "oklch_to_hex", "out_of_gamut_excursion", "scale_color_accessible", "scale_colour_accessible", "scale_fill_accessible", "simulate_cvd", "srgb_to_hex" ], "_help": [ { "page": "ciede2000", "title": "CIEDE2000 colour difference between two sRGB colours", "topics": [ "ciede2000" ] }, { "page": "contrast_ratio", "title": "WCAG 2.x contrast ratio between two sRGB colours", "topics": [ "contrast_ratio" ] }, { "page": "generate_palette", "title": "Generate an audited palette from one seed colour", "topics": [ "generate_palette" ] }, { "page": "hex_to_oklch", "title": "Convert a HEX colour to OKLCH", "topics": [ "hex_to_oklch" ] }, { "page": "hex_to_srgb", "title": "Convert a HEX colour to sRGB", "topics": [ "hex_to_srgb" ] }, { "page": "max_chroma", "title": "Largest OKLCH chroma at (L, H) inside the sRGB gamut", "topics": [ "max_chroma" ] }, { "page": "oklch_to_hex", "title": "Convert an OKLCH colour to HEX", "topics": [ "oklch_to_hex" ] }, { "page": "out_of_gamut_excursion", "title": "Pre-clamp gamut excursion of a CVD simulation", "topics": [ "out_of_gamut_excursion" ] }, { "page": "scale_colour_accessible", "title": "Discrete colour scale from an audited palettecore palette", "topics": [ "scale_color_accessible", "scale_colour_accessible" ] }, { "page": "scale_fill_accessible", "title": "Discrete fill scale from an audited palettecore palette", "topics": [ "scale_fill_accessible" ] }, { "page": "simulate_cvd", "title": "Simulate colour-vision deficiency (complete dichromacy)", "topics": [ "simulate_cvd" ] }, { "page": "srgb_to_hex", "title": "Convert an sRGB colour to HEX", "topics": [ "srgb_to_hex" ] } ], "_readme": "https://github.com/heidihelena/palettecore/raw/HEAD/README.md", "_rundeps": [], "_score": 1.6989700043360187, "_indexed": true, "_nocasepkg": "palettecore", "_universes": [ "heidihelena" ], "_previous": "0.2.1", "_binaries": [ { "r": "4.7.0", "os": "linux", "version": "0.2.2", "date": "2026-07-23T22:42:52.000Z", "distro": "resolute", "commit": "ef9f78d8ff5a96658866f7207b61d70c8c8e5aaf", "fileid": 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