Editable design tokens with calculated contrast ratios and CSS export — working example

Explore editable color tokens, measure contrast and export a consistent CSS and JSON token set. A token editor, accessible contrast matrix, live component specimens and CSS variables ready to paste into a project. PopNow can add optional media after a quote; the core workflow runs locally.

Uses PopNow for
Images
Needs
Node.js

The skill is free. Optional AI images, video and sound are quoted for your approval before generation. API-key calls use your separate API balance in USD; generation through ChatGPT or Claude connected via OAuth/MCP uses your website credits.

v1.0.0 · Updated Oct 24, 2026 · 40 KB · Use it for personal and client work; please don't resell or share the package.

What you get

  1. A token editor, accessible contrast matrix, live component specimens and CSS variables ready to paste into a project.

  2. A validated local data model and self-contained HTML builder

  3. Representative data, editable source and meaningful regression checks

  4. Optional PopNow media with approval before generation

Good for

  • Build a design-system playground for our warm product palette and flag text combinations below 4.5:1.
  • Teams that need an editable local artifact with traceable inputs

Not for

  • Contrast checks do not replace a full accessibility audit; typography, focus behavior and interaction still need review.
  • A hosted backend or synchronized multi-user service

How to use it

You say

  • Use the PopNow skill "Design System Showcase" (design-system-showcase) for this: Build a design-system playground for our warm product palette and flag text combinations below 4.5:1.

Then try

  • Apply our actual data and explain any rejected fields.

  • Adapt the layout to our brand and quote optional PopNow media first.

What to have ready

  • JSON {name,tokens:{background,surface,text,muted,accent,onAccent},radius,spacing}. Colors are six-digit hexadecimal values; sizes are whole pixels.
  • Your final audience, labels and publication destination
  • Owned assets and verified claims for any public version

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Questions

What input does this workflow need?

JSON {name,tokens:{background,surface,text,muted,accent,onAccent},radius,spacing}. Colors are six-digit hexadecimal values; sizes are whole pixels.

What does it calculate or validate?

Calculate WCAG relative luminance and contrast for body, muted and action text. Update a component preview from the same tokens and export CSS/JSON without hiding failing combinations.

What is outside its scope?

Contrast checks do not replace a full accessibility audit; typography, focus behavior and interaction still need review.

Can I use it without an API key?

Yes. The local template, validation and exports work without a key. PopNow media is optional and requires a quoted, approved API USD budget.