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.
☆566May 6, 2026Updated last month
Alternatives and similar repositories for SAPC-APCA
Users that are interested in SAPC-APCA are comparing it to the libraries listed below. We may earn a commission when you buy through links labeled 'Ad' on this page.
Sorting:
- The APCA version, to be licensed for use with guidelines: W3/AGWG.☆199May 6, 2026Updated last month
- ☆18Jun 28, 2023Updated 2 years ago
- 𝜟𝜱✴︎ or Delta Phi Star is a variant method of determining lightness contrast, and a sibling of APCA and SACAM. It is a simplified versi…☆31May 6, 2026Updated last month
- A tool to create accessible color systems☆441Nov 19, 2023Updated 2 years ago
- Generate colors based on a desired contrast ratio☆2,122May 18, 2026Updated last month
- Deploy on Railway without the complexity - Free Credits Offer • AdConnect your repo and Railway handles the rest with instant previews. Quickly provision container image services, databases, and storage volumes.
- alt text editor for note.com☆13Feb 17, 2026Updated 4 months ago
- JS color calculator for composing colors with consistent APCA contrast ratio.☆185Feb 4, 2025Updated last year
- Accessibility Guidelines "Silver"☆200Sep 26, 2025Updated 8 months ago
- Color conversion & manipulation library by the editors of the CSS Color specifications☆2,256Updated this week
- A lightweight but versatile mini-lib to parse color strings, objects, or numbers, returning a simple rgba array, and related string utili…☆24May 6, 2026Updated last month
- A fast, lightweight Figma plugin for checking color contrast☆46Jan 7, 2023Updated 3 years ago
- A TypeScript package to calculate WCAG 2.0/3.0 and APCA color contrasts☆22May 13, 2026Updated last month
- This is the official DTCG repository for the design tokens site and specification.☆2,028Updated this week
- WhoCanUse is a tool that brings attention and understanding to how color contrast can affect different people with visual impairments.☆489Jun 12, 2024Updated 2 years ago
- Wordpress hosting with auto-scaling - Free Trial Offer • AdFully Managed hosting for WordPress and WooCommerce businesses that need reliable, auto-scalable performance. Cloudways SafeUpdates now available.
- A tool to pick colors using a variety of models, measure contrast using the draft WCAG 3 algorithm, and find new colors with good contras…☆19Oct 26, 2021Updated 4 years ago
- ☆172May 26, 2025Updated last year
- The missing introduction to APCA☆18Aug 26, 2025Updated 9 months ago
- Hands on CSS demos☆231Feb 15, 2024Updated 2 years ago
- Flipping how we define typography in CSS.☆1,693Jun 12, 2026Updated last week
- Color Picker for LCH☆1,906Apr 28, 2026Updated last month
- JSX and TSX support for textlint.☆13May 20, 2026Updated 3 weeks ago
- how screen readers support HTML☆62May 29, 2026Updated 2 weeks ago
- Implements https://w3c.github.io/accname/☆127Apr 19, 2026Updated 2 months ago
- Deploy open-source AI quickly and easily - Special Bonus Offer • AdRunpod Hub is built for open source. One-click deployment and autoscaling endpoints without provisioning your own infrastructure.
- Harmonic Modular Scale Typography☆22Mar 31, 2021Updated 5 years ago
- WCAG 3☆151Updated this week
- This CSS file displays WAI ARIA ( [role], [aria-*] )☆15Dec 19, 2017Updated 8 years ago
- WAI-ARIA Authoring Practices Guide (APG)☆1,326Updated this week
- Open-source project. Tracking the available automation for accessibility. What a11y failures can be linted & tested for in an automated f…☆255May 14, 2025Updated last year
- NVDA Cheat Sheet☆16Nov 17, 2024Updated last year
- Accessibility Support data for various HTML, ARIA, CSS, and SVG features☆322May 29, 2026Updated 2 weeks ago
- Test runner and results reporter for ARIA-AT☆45Updated this week
- A list of resources on all things to do with Design Tokens☆1,296Feb 20, 2026Updated 3 months ago
- GPUs on demand by Runpod - Special Offer Available • AdRun AI, ML, and HPC workloads on powerful cloud GPUs—without limits or wasted spend. Deploy GPUs in under a minute and pay by the second.
- Official repository of the plugin 'Tokens Studio for Figma' (Figma Tokens)☆1,591Jun 12, 2026Updated last week
- Maintain an open standard for UI and promote its adherence and adoption.☆4,492Jun 9, 2026Updated last week
- A build system for creating cross-platform styles.☆4,696Updated this week
- Lion-based Design System☆22Apr 19, 2023Updated 3 years ago
- Axe rules to check against APCA bronze and silver+ conformance levels.☆25Jun 30, 2025Updated 11 months ago
- Get a swatch svg for a color token from @primer/primitives☆21Feb 25, 2026Updated 3 months ago
- Accessible Rich Internet Applications (WAI-ARIA)☆746Updated this week