v0.14.0

Minor Changes

• #63 3b6e2a6 Thanks @tenphi! - Replace the OKHSL lightness axis with a contrast-uniform tone axis (OKHST) and remove the Möbius dark-mode curve.

  Breaking changes

  • The lightness authoring prop is gone. Use tone (0–100, contrast-uniform) everywhere — theme colors, glaze.color() structured input, and relative offsets. Equal tone steps now give equal WCAG contrast, so numeric values won't map to the same OKHSL lightness as before; re-check absolute mid-range values.
  • Config windows changed: lightLightness / darkLightness → lightTone / darkTone. A window is [lo, hi] (reference eps — the common form), { lo, hi, eps } (advanced eps tuning), or false to disable clamping. false removes the boundaries (full [0, 100] range) but keeps the contrast-uniform tone curve. darkCurve was removed.
  • ResolvedColorVariant now stores { h, s, t, alpha } (tone) instead of { h, s, l }. Use the new variantToOkhsl() helper to recover OKHSL lightness.
  • Export snapshots now carry lightTone / darkTone windows.
  • Relative tone offsets that overshoot [0, 100] now mirror to the other side of the base by default (the new flip, inheriting autoFlip) instead of clamping. Set flip: false (or autoFlip: false) to restore clamping.

  New

  • tone: 'max' / 'min' forces a color to the scheme's tone extreme (lightest / darkest) with no base and no contrast hack; under mode: 'auto' they invert in dark like any tone.
  • flip per-color prop (default: global autoFlip): mirrors out-of-bounds relative tone overshoot and unmet contrast to the opposite side of the base, or clamps when false.
  • Tone windows accept the [lo, hi] array shorthand alongside { lo, hi, eps } and false.
  • contrast accepts a metric selector: a bare number/preset is WCAG, { wcag } / { apca } picks the metric, and the [normal, hc] pair may live at the outer level or inside the metric ({ wcag: [4.5, 7] }).
  • APCA Lc contrast solving alongside WCAG, plus an APCA-based drift verification warning for chromatic swatches.
  • OKHST input: okhst(H S% T%) strings and { h, s, t } objects (input only — never emitted).
  • saturationTaper config knob (default 0.15) gently rolls off saturation toward the tone extremes.
  • New exports: toTone, fromTone, toneFromY, yFromTone, okhstToOkhsl, okhslToOkhst, variantToOkhsl, REF_EPS, findToneForContrast, resolveContrastForMode, apcaContrast, and the ContrastSpec / OkhstColor / ToneWindow / ExtremeValue / ToneValue types.

Patch Changes

• #63 3b6e2a6 Thanks @tenphi! - Adjust the default tone-window floors: lightTone is now [10, 100] (was [13, 100]) and darkTone is now [15, 95] (was [10, 95]). The OKHST migration made dark schemes bottom out darker than the legacy pipeline for the same input; lifting the dark floor keeps the darkest dark-mode surfaces closer to the previous output, and lowering the light floor widens the usable light range. Override with lightTone: [13, 100] / darkTone: [10, 95] to restore the prior values.