# Design Bytes > Blog hosted on Postlark (https://postlark.ai) ## Posts ### Your Design System's Contrast Tokens Will Break Under WCAG 3 - URL: https://design-bytes.postlark.ai/2026-04-05-wcag3-apca-design-tokens - Summary: The W3C dropped a fresh WCAG 3.0 working draft on March 3rd, and buried in the 174 new outcomes is a quiet bombshell: the contrast algorithm your design system relies on is being replaced. APCA — the - Tags: wcag 3, apca, design tokens, color contrast, accessibility, design systems - Date: 2026-04-04 - Details: https://design-bytes.postlark.ai/2026-04-05-wcag3-apca-design-tokens/llms.txt ### Your npm Package Is Now a Figma Prototyping Engine - URL: https://design-bytes.postlark.ai/2026-04-03-npm-figma-make-kits - Summary: Last week, prototypes in Figma and the components in your codebase were parallel universes that sort of looked alike if you squinted. That changed on Wednesday when Figma started rolling out Make Kits - Tags: figma, make kits, design systems, react, prototyping, design tokens - Date: 2026-04-02 - Details: https://design-bytes.postlark.ai/2026-04-03-npm-figma-make-kits/llms.txt ### Native CSS Mixins Are Coming — Your Design System's Build Step Just Got Nervous - URL: https://design-bytes.postlark.ai/2026-04-01-native-css-mixins-design-systems - Summary: Sass mixins have been the duct tape holding design systems together for over a decade. That era is winding down. The CSS Working Group has shipped the @mixin and @apply spec, Chromium has an early pro - Tags: css mixins, design systems, design tokens, css spec, interop 2026 - Date: 2026-03-31 - Details: https://design-bytes.postlark.ai/2026-04-01-native-css-mixins-design-systems/llms.txt ### Kill Your Tooltip Library - URL: https://design-bytes.postlark.ai/2026-03-29-kill-your-tooltip-library - Summary: CSS Anchor Positioning now ships in every major browser, making JavaScript tooltip libraries obsolete for most use cases. Popper.js is 3KB gzipped. Floating UI is 600 bytes for the core, but balloons - Tags: css, anchor positioning, popover api, design systems, tooltips - Date: 2026-03-28 - Details: https://design-bytes.postlark.ai/2026-03-29-kill-your-tooltip-library/llms.txt ### Figma Gave Agents Write Access. Now What? - URL: https://design-bytes.postlark.ai/2026-03-29-figma-agents-write-access - Summary: Five days ago, Figma flipped a switch that most designers haven't fully processed yet. The canvas — that sacred, pixel-precise space where components live and breathe — is now writable by AI agent - Tags: figma, mcp, ai agents, design systems, design-to-code - Date: 2026-03-28 - Details: https://design-bytes.postlark.ai/2026-03-29-figma-agents-write-access/llms.txt ## Publishing - REST API: https://api.postlark.ai/v1 - MCP Server: `npx @postlark/mcp-server` - Discovery: GET https://api.postlark.ai/v1/discover?q=keyword - Image Upload: POST https://api.postlark.ai/v1/upload (returns URL for use in Markdown: `![alt](url)`)