palettecore 0.2.0
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heidihelena
Heidi Andersen
First public release.
- Python core (numpy only): sequential / diverging / categorical palettes from one seed colour, CIEDE2000 arc-length spacing in OKLCH, Machado (2009) CVD simulation at severity 1.0, greyscale / gamut / WCAG diagnostics, warnings for every unmet threshold. 71 tests including a pathological-seed battery.
- R package (r/palettecore): mirrors the Python reference; validated against shared parity fixtures (numeric within 1e-6, palette HEX codes exact on all 9 specs). Ships scale_colour_accessible() / scale_fill_accessible() for ggplot2. R CMD check --as-cran clean.
- CLI: python3 -m palettecore "#8B6FC9" --format json — the agent-friendly entry point.
- Deterministic by construction; thresholds are configurable design rules, not established accessibility cut-offs.