Projects in Awesome Lists tagged with apca
A curated list of projects in awesome lists tagged with apca .
https://github.com/myndex/sapc-apca
APCA (Accessible Perceptual Contrast Algorithm) is a new method for predicting contrast for use in emerging web standards (WCAG 3) for determining readability contrast. APCA is derived form the SAPC (S-LUV Advanced Predictive Color) which is an accessibility-oriented color appearance model designed for self-illuminated displays.
accessibility apca cieluv color color-contrast color-contrast-checker color-models color-theory colorimetry contrast contrast-calculator css luminance readability srgb vision wcag wcag-contrast web
Last synced: 16 May 2025
https://github.com/Myndex/SAPC-APCA
APCA (Accessible Perceptual Contrast Algorithm) is a new method for predicting contrast for use in emerging web standards (WCAG 3) for determining readability contrast. APCA is derived form the SAPC (S-LUV Advanced Predictive Color) which is an accessibility-oriented color appearance model designed for self-illuminated displays.
accessibility apca cieluv color color-contrast color-contrast-checker color-models color-theory colorimetry contrast contrast-calculator css luminance readability srgb vision wcag wcag-contrast web
Last synced: 07 May 2025
https://github.com/myndex/apca-w3
The APCA version, to be licensed for use with guidelines: W3/AGWG.
accessibility apca color colour contrast contrast-calculator contrast-checker contrast-finder contrast-ratio css javascript perceptual readability vision w3c wcag wcag-contrast
Last synced: 05 Apr 2025
https://github.com/evilmartians/figma-polychrom
Figma plugin for displaying the contrast level and font size recommendations according to the APCA method
a11y accessibility apca contrast contrast-ratio figma figma-api figma-plugin figma-plugins
Last synced: 22 Jul 2025
https://github.com/myndex/deltaphistar
𝜟𝜱✴︎ or Delta Phi Star is a variant method of determining lightness contrast, and a sibling of APCA and SACAM. It is a simplified version using easily invertible standardized maths, however it lacks some useful properties such as polarity sensitivity. In fact, it is intended for applications where a "general" simplifed perceptual contrast is desired, where polarity sensitivity is not needed (or is ambiguous).
apca cartesian cielab cieluv color colour contrast css lab lstar luv readability wcag
Last synced: 27 Oct 2025
https://github.com/Myndex/deltaphistar
𝜟𝜱✴︎ or Delta Phi Star is a variant method of determining lightness contrast, and a sibling of APCA and SACAM. It is a simplified version using easily invertible standardized maths, however it lacks some useful properties such as polarity sensitivity. In fact, it is intended for applications where a "general" simplifed perceptual contrast is desired, where polarity sensitivity is not needed (or is ambiguous).
apca cartesian cielab cieluv color colour contrast css lab lstar luv readability wcag
Last synced: 16 May 2025
https://github.com/myndex/bridge-pca
A simplified version of the APCA math to bridge from WCAG_2 contrast math to the future, while being 100% backwards compatible with WCAG_2 contrast. By "backwards compatible" we mean if bridge-pca passes it, it will automatically pass WCAG_2 contrast.
a11y accessibility apca color colour contrast css design javascript wcag
Last synced: 15 Mar 2026
https://github.com/thejian/nvim-moonwalk
An accessible color scheme backed by scientific research.
alacritty-theme apca colorscheme iterm2-theme neovim neovim-colorscheme
Last synced: 14 Oct 2025
https://github.com/myndex/max-contrast
Send it the background color, returns black or white whichever is maximum Lc value
apca color contrast contrast-enhancement contrast-ratio css wcag web-colors
Last synced: 07 May 2025
https://github.com/myndex/myndex
A catalog of Myndex Research content, including APCA articles & documentation, related code repositories, and resources.
accessibility apca bridgepca color contrast contrastcalculator intellectual-property research vision wcag
Last synced: 07 May 2025
https://github.com/gfellerph/sass-apca
Sass implementation of the Accessible Perceptual Contrast Algorithm (APCA) for the WCAG 3.0 specification.
Last synced: 14 Aug 2025
https://github.com/myndex/seestars
See Stars is a Myndex MicroColor Library. This has standard functions for the standard (piecewise) IEC conversion of sRGB to Y, and the CIE standard Y to L* (Lstar) and back again. The math & constants here reference those of CSS 4 for compatibility.
apca cie cielab cieluv color colour lstar microcolor srgb
Last synced: 09 Mar 2026
https://github.com/myndex/illuminated
A repo collecting the more substantial comments Myndex made regarding typography, CSS, color, contrast, and vision.
apca color color-space colour contrast digital-images font-design sacam typography web-design web-dev
Last synced: 16 Feb 2026
https://github.com/arshawnarbabi/premium.md
A 10-file markdown template system that turns any AI agent into a reliable premium-grade product builder — brand, content, design (web + mobile), discoverability (SEO+AEO+GEO), a QA gate, and a decision log, plus an OKLCH palette generator + brand-kit viewer. ~4,000 lines of research distilled into ~8,500 lines of operational templates.
accessibility ai ai-workflow apca brand-kit claude cursor design-md design-system design-tokens information-md llm nextjs oklch premium-ui project-templates radix spec-md tailwindcss ui-design
Last synced: 19 Jun 2026
https://github.com/arshawnarbabi/premium-product-templates
Six-file template system (PROJECT / INFORMATION / DESIGN × 2 / SPEC × 2) that turns any AI agent into a reliable premium-grade product builder. ~4,000 lines of research distilled into operational templates.
accessibility ai ai-workflow apca claude cursor design-system design-tokens figma-tokens information-md llm nextjs oklch premium-ui project-templates radix spec-md tailwindcss template ui-design
Last synced: 30 May 2026
https://github.com/a-ng-d/engine-ui-color-palette
Core utilities library for UI Color Palette - a color management plugin for design tools. This library provides the foundational color manipulation, contrast calculation, and palette generation features used in the plugin.
apca color contrast wcag2 wcag3
Last synced: 23 Jul 2026
https://github.com/sawfwair/dkcli
Proof-driven design CLI for OKLCH palettes, APCA contrast, fluid scales, motion curves, layout audits, tokens, and Svelte components.
apca cli design-system oklch svelte typography vitepress
Last synced: 06 Jun 2026
https://github.com/myndex/tuttleandbuttle
Canonical rebuttals to sponsored rumors regarding APCA, APC-RC, BridgePCA, etc.
apca apca-w3 contrast harassment obstruction politics rumors trolls w3c wcag wcag-contrast wcag2
Last synced: 19 Mar 2026
https://github.com/a-ng-d/utils-ui-color-palette
Core utilities library for UI Color Palette - a color management plugin for design tools. This library provides the foundational color manipulation, contrast calculation, and palette generation features used in the plugin.
apca color contrast wcag2 wcag3
Last synced: 19 Apr 2026
https://github.com/myndex/turbocontrastulator
For a number of years now, work has been proceeding in order to bring perfection to the cryptically conceived concept of contrast that would not only supply inverse reactive spatial quanta for use in unilateral phase detractors, but would also be capable of automatically syncing cardinal grameters. Such an algorithm is the Turbo Contrastulator.
apca april-fools color contrast contrastcalculator satire turbocontrastulator turboencabulator wcag
Last synced: 12 Feb 2026
https://github.com/rhino-ty/apca-contrast-skill
AI agent skill: APCA-W3 v0.1.9 perceptual contrast measurement with fontLookupAPCA pass/fail — design system audits for Tailwind v4 / shadcn oklch tokens, light/dark mode side-by-side
a11y accessibility agent-skills ai-agents apca claude-code claude-skill claude-skills color-contrast design-system oklch shadcn skills tailwindcss wcag
Last synced: 06 Jun 2026
