Programming
My theme build fails if any color misses WCAG contrast — here's the pipeline
A
Admin User
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Jul 30, 2026
5 min read
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Summary
The problem with
One palette file, thirteen apps
The gate
def contrast(a: str, b: str) -> float: la, lb = rel_lum(a), rel_lum(b) hi, lo = max(la, lb), min(la, lb) return (hi + 0.05) / (lo + 0.05)
Confession: v1 of this gate had holes
Tuning by binary search, not by eye
What I'd tell other theme authors
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This article discusses content originally published by at Dev.to.
