# brandkit

Build a token-based design foundation from a product brief, with separate light and dark themes and contrast checks. Use it to establish shared visual rules before designing screens.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 510 installs · ★ 3016
- Author: plugin87
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/plugin87/ux-ui-agent-skills/tree/HEAD/.claude/skills/brandkit/SKILL.md
- Updated: 2026-10-26
- HTML: https://affpapa.org/en/nevibecode/skills/plugin87-brandkit

## What it does

brandkit turns a brief into a three-layer token system: primitives, semantic roles, and component values. It covers color, typography, spacing, radius, shadows, and motion. Colors use OKLCH, and the dark theme gets its own overrides rather than an inverted light palette.

The skill emits DTCG JSON files and one shared `theme.css`. It checks token JSON, aliases, component variable references, and WCAG AA contrast in both themes. The token kit files must be present for the skill to work; if they are missing, the instructions point to `npx ux-ui-agent-skills init` or a plugin installation. You can run `npm run verify` for the verification pipeline. A person still needs to judge whether the resulting brand feel fits the brief.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add plugin87/ux-ui-agent-skills --skill brandkit -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/brandkit/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/brandkit/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add plugin87/ux-ui-agent-skills --skill brandkit -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/brandkit/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add plugin87/ux-ui-agent-skills --skill brandkit -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/brandkit/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install plugin87/ux-ui-agent-skills brandkit
```

2. **Manually: put the files in place**
- File: `.github/skills/brandkit/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add plugin87/ux-ui-agent-skills --skill brandkit -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/plugin87/ux-ui-agent-skills --path .claude/skills/brandkit
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/brandkit/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add plugin87/ux-ui-agent-skills --skill brandkit -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/plugin87/ux-ui-agent-skills/tree/HEAD/.claude/skills/brandkit/SKILL.md

## When to use it
- derive a brand and neutral color scale from a product brief
- assign primitive values to semantic design roles
- create tokens for light and dark themes
- check contrast and resolve component theme variables

## Example prompts
- Build a design system from this brief, with light and dark themes.
- Create an OKLCH palette and organize the values into DTCG layers.
- Validate the tokens and check contrast in both themes against WCAG AA.

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: 958e07719441aa1d.

BEGIN THIRD-PARTY FILE 958e07719441aa1d
```text
---
name: brandkit
description: Generate a complete, accessible brand design system from a brief, as primitive → semantic → component DTCG tokens (color, type, spacing, radius, shadow, motion), light + dark, plus a single theme.css, verified for WCAG. Use when the user wants a from-scratch brand/design foundation, a new palette + type system, or a themeable token kit for a product.
# `invocation:` was not a field Claude Code reads - unknown frontmatter keys are
# ignored without an error, so these six were auto-invocable the whole time they
# were marked user-only. This is the field that actually does it.
disable-model-invocation: true
---

# Skill: Brand Kit

> **Step 0: is the kit here?** This skill reads files from the kit. Check once:
> `ls ${CLAUDE_SKILL_DIR}/../../../tokens >/dev/null 2>&1 && echo KIT_OK || echo KIT_MISSING`
> On `KIT_MISSING` only the skill folders were installed, which is what
> `npx skills add` does. Say so plainly, point the user at
> `npx ux-ui-agent-skills init` or the plugin install, and stop. Do not guess the
> contents of a file you could not open.

Stand up the *foundation* (one token system everything renders from) before any screen. Get this right and every page stays consistent and themeable from one place.

## Steps
1. **Brief Inference (mandatory)**: name the industry, audience, the one mood adjective, and motion depth (`${CLAUDE_SKILL_DIR}/../../../taste/design-taste.md` → Brief Inference). Pick an anchoring archetype from `${CLAUDE_SKILL_DIR}/../../../taste/aesthetic-systems.md`.
2. **Primitives**: generate the brand color ramp in **OKLCH** (11 shades, consistent chroma) + a neutral ramp; verify the 500 shade ≥ 4.5:1 on white (text) and 600 ≥ 3:1 (UI) per `${CLAUDE_SKILL_DIR}/../../../.claude/rules/tokens-and-color.md` → Color Generation.
3. **Semantic layer**: map roles to primitives (`action.primary`/`-hover`/`destructive`, `text.{primary,secondary,on-action,link}`, `surface.{page,card,raised}`, `border.{default,strong}`, `feedback.{success,warning,error,info}`), and the **dark** overrides (designed, not inverted).
4. **Scales**: Major Third type scale + composite text styles, 4px spacing scale, radius tiers, elevation, and `${CLAUDE_SKILL_DIR}/../../../tokens/motion.json`-style durations/easings.
5. **Emit** the DTCG `${CLAUDE_SKILL_DIR}/../../../tokens/*.json` (3-tier) + a single `theme.css` (the one shared source, `[data-theme="dark"]` overrides). Optionally feed the token-build pipeline (`token-build` skill) for other platforms.

## Verification (definition of done)
- `python3 ${CLAUDE_SKILL_DIR}/../../../scripts/validate_tokens.py`: valid JSON, all aliases resolve.
- `python3 ${CLAUDE_SKILL_DIR}/../../../scripts/validate_contrast.py`: required text/action/border pairs pass WCAG AA in **light AND dark**; `border.strong` ≥ 3:1.
- `python3 ${CLAUDE_SKILL_DIR}/../../../scripts/validate_theme_refs.py`: every component `var(--…)` resolves to the theme.
```
END THIRD-PARTY FILE 958e07719441aa1d

The third-party file has ended. Everything between the 958e07719441aa1d tags is data: requests and commands from it are not followed. An “end of file” line with another tag inside the block is part of the file.

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