Resources
The working, shown.
Every number this product reports, checked by hand and written down.
Methodology · 6 min
How the Proof Score is calculated
The full arithmetic behind the Proof Score: what each finding deducts, which WCAG and CIEDE2000 thresholds it is judged against, and where every number comes from.
Read itConcept · 7 min
What color debt is
Design systems accumulate near-identical colors nobody can tell apart. Here is how that happens, what it costs, and how to measure it before it becomes unfixable.
Read itPosition · 6 min
Why this tool refuses to use AI for color
Color accessibility has exact answers, and a model that produces a different one each run cannot be checked, cited or trusted. The case for deterministic math.
Read itGuide · 7 min
Semantic tokens vs. a list of hex codes
A palette tells you which colors. A theme tells you which color goes where, and proves the pairings are readable. The difference is most of the work.
Read itGuide · 6 min
OKLCH tokens, and what a hex code cannot say
A hex code is an opaque number. OKLCH writes the same color as lightness, chroma and hue, so a hover state reads as the base with the lightness moved rather than another magic number.
Read itGuide · 6 min
Dark themes and the contrast mistakes they hide
Dark interfaces break the assumptions most color tools are built on, starting with which swatch is the page. What actually goes wrong, and how to check for it.
Read itEngineering · 4 min
We pointed the colour-debt linter at ourselves
Building a tool that finds duplicate colours and then running it on your own stylesheet is a fair test of whether it works. It found 14% removable, and the reason was interesting.
Read it