apca-w3
APCA: the Accessible Perceptual Contrast Algorithm, a modern contrast method that improves readability contrast on self-illuminated displays. Developed for the W3C's WCAG 3 and other standards.
1
Versions
Limited W3 License
License
No
Install Scripts
Missing
Provenance
Supply chain provenance
Status for the latest visible version.
No SLSA provenance
npm registry signatures
gitHead linked
Without SLSA provenance there is no cryptographic link between this tarball and the public source — the axios compromise (March 2026) relied on exactly this gap.
Maintainers
myndex
Keywords
CSSHTMLPDFRTFsRGBRGBP3displayP3Adobe RGBLChLstarcolorcolourcontrastlightnessbrightnessluminanceluminance contrastlightness contrastperceptual contrastvisual contrastcolor contrastcolour contrasttext contrastAPCA contrastA11y contrastconstant contrastaccessible contrastreadability contrastreadabilityaccessibilitycontrast sensitivityspatial frequencyspacial frequencydesign toolsdesign systemsdesign guidelinestypographya11yW3CWCAGWCAG 2WCAG 3SACAMSAPCAPCA
Versions (showing 1 of 1)
| Version | Deps | Published |
|---|---|---|
| 0.1.9 | 1 / 3 |
v0.1.9
1 finding
LOW
No provenance attestation
provenance
Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.