test(theme): widen distinguishability threshold headroom

The distinguishability threshold (10) sat only 2 units below the palette's
measured closest pair (coral/peach at 12.0), making it brittle to a minor
future nudge. Lower to 8: still fails the old palette's closest pair
(fog/storm at 7.55) while giving the current palette 4 units of headroom.
Also corrects the spec's lightness-change figure from -0.1 (computed from
rounded HSL) to the precise -0.18.
This commit is contained in:
Frederic Cabassut
2026-07-31 12:03:39 +02:00
committed by Fred Cabassut
parent ffc49f2676
commit a2463ac316
2 changed files with 5 additions and 4 deletions
@@ -92,7 +92,7 @@ html, body { accent-color: var(--accent-check); }
## 2. Note card colours (`src/lib/utils/colors.ts`)
Replace `NOTE_COLORS_DARK`. Every entry keeps its light counterpart's hue, holds lightness
near-constant against today's values (measured average change: +4.1 saturation points, −0.1
near-constant against today's values (measured average change: +4.1 saturation points, −0.18
lightness points), and nudges two crowded hues apart (`blossom` and `storm` shift toward pink
and true blue respectively) so the twelve read as distinguishable siblings rather than a smudge.
The visible improvement in dark mode comes from the base surfaces, the picker chips, the