The Tailwind slate greys were cold. Each one is now r=g=b at its own
OKLab lightness, so every contrast stays where it was: the theme's
chrome, the path chips, the map's roads, labels and buildings, the heat
tail, and the emulator window. test_neutral_greys fails any #rrggbb
literal that reads as a grey and has a tint.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
Each test docstring states the behaviour that the test proves, in the
simple present. No assertion message, test id, or other string literal
changed. Four statements now agree with the code: the Trace highlight
stays on the last row, a menu count, and two others.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
On the desktop and the Cardputer, a chip was the node's hue with dark
ink on it, so a node's colour moved from its name to the ground behind
it the moment a route drew it. Now the label is the hue, the colour the
name has in every list and in arrow mode, and the fill is the same hue
at 0.60 of its OKLab lightness (CHIP_LIGHTNESS): the rule the PicoCalc
draws with its dim twins, at full resolution. A hash label and an
annotation are the label colour throughout, with the lit bytes bold.
A keyless chip is the same pair in grey; our star, a faded hop and the
composer's white slot keep what they had.
The value came from two ladders over twelve hues. A fixed step down in
lightness made the blue fills almost black (blue is the wheel's darkest
hue), one lightness for every fill made the blue label hard to read on
its own ground, and 0.65 / 0.55 were too weak in blue / too dull in
yellow. Darkening at constant chroma leaves sRGB, and the clip merged
neighbouring greens into one #008000, so oklab.fitted lowers the chroma
instead and keeps the hue.
A thin seam between two chips of one colour is now drawn in the
previous chip's label colour, the light half of its own pair, on both
palettes; the shaded-fill rule (SEAM_SHADE) is gone with it.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The thin chevron between two chips the reader can't tell apart is now drawn in the
previous chip's own fill stepped SEAM_SHADE darker (lighter for a dark fill) on the
fill ahead, so nothing on the ribbon is a colour that isn't a chip's. The step is
measured from whichever fill is further along, so the mark clears the fill it sits
on by the full shade however close the two are.
Whether two fills blur is now a perceptual distance, not a hue gap: ui/oklab.py is
the reference OKLab transform (from_hex, to_hex, distance, shaded), and the seam
interlocks only where the fills sit SEAM_BLUR (0.10) or more apart. The hue rule
mis-sized the wheel badly: sixteen first-byte steps measure 0.026 across the greens
and 0.165 across the cyans, so it blurred too little on one side and too much on the
other, and an sRGB distance would only have restated the hue gap, a fixed byte step
being a near-constant 55-60 of 8-bit RGB all the way round. 0.10 is five noticeable
differences, the typical 0x10 pair with a little to spare, erring toward the thin
chevron because a wrong blur still draws a legible seam and a wrong interlock draws
none. The greys need no exemption any more: the keyless grey and the faded slate sit
0.18 apart and keep their interlock on the metric alone.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Jean-Pierre MartineauandClaude Haiku 5.5