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extracted · 34 artefacts
resend.com
Live extraction of https://resend.com — tokens, emitters, anatomy, icons, voice, motion, MCP server, AGENTS.md, prompt pack and a 13-chapter brand book. Generated with one command.
17colors
Aaf0
vs design-extractor.com
See full comparison ↗They surface 4 sections per brand (DESIGN.md · Tailwind · CSS · Tokens). designlang ships 34 artefacts for resend.com and renders 12+ sections below.
4,049 charsbrand book ↗
---
site: Resend · Email for developers
url: "https://resend.com"
generated_at: "2026-06-25T08:26:02.770Z"
generator: "designlang@13.0.0"
intent: landing
material: flat
library: shadcn/ui
tokens:
colors:
primary: "#d6ebfd"
secondary: "#00a3ff"
accent: "#44ffa4"
background: "#000000"
foreground: "#ffffff"
typography:
sans: inter
mono: commitMono
base: 12
spacing:
base: 2
scale: "[1, 20, 24, 28, 40, 48, 62, 80, 96, 104]"
radii:
sm: 4
md: 8
lg: 16
xl: 24
shadows:
sm: "rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgb(255, 255, 255) 0px 1px 1px 0px inset"
---
# Overview
A **landing** page (heuristic confidence 0.31), dressed in **flat** material.
Component library appears to be **shadcn/ui** (0.65).
> "Email for
developers"
The author writes in a **neutral** voice; headings tend to be **Sentence case** case and **tight**.
Reading order detected on the source: `feature-grid → hero → content → hero → nav → footer → testimonial → hero → content → testimonial → nav → sidebar → hero → feature-grid → testimonial → cta → footer → content`.
Source: <https://resend.com>.
# Colors
| role | hex | usage |
|---|---|---|
| primary | `#d6ebfd` | 121 |
| secondary | `#00a3ff` | 1 |
| accent | `#44ffa4` | 78 |
| background | `#000000` | — |
| foreground | `#ffffff` | — |
**Neutrals:** `#f0f0f0` · `#a1a4a5` · `#ffffff` · `#f1f7fe` · `#464a4d`
**Total unique colors detected:** 28.
# Typography
**Families**
- `inter` · 2021 uses
- `commitMono` · 814 uses
- `aBCFavorit` · 31 uses
- `Helvetica` · 25 uses
**Body size:** `12px` / line-height `16px`.
**Heading scale**
| level | size | weight | line-height |
|---|---|---|---|
| h1 | `96px` | `400` | `96px` |
| h2 | `76.8px` | `400` | `76.8px` |
| h3 | `56px` | `400` | `67.2px` |
| h4 | `24px` | `400` | `33.6px` |
# Layout
**Spacing base:** `2px` increments.
**Scale:** `1px` · `20px` · `24px` · `28px` · `40px` · `48px` · `62px` · `80px` · `96px` · `104px`
**Layout primitives:** 7 grid containers · 463 flex containers.
**Breakpoints:** `[object Object]px`
# Elevation and Depth
**Shadow scale**
- `sm` — `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0.1) 0px 1px 3px 0px, rgba(0, 0, 0, 0.1) 0px 1px 2px -1px`
- `sm` — `rgb(0, 0, 0) 0px 0px 0px 8px`
- `sm` — `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(176, 199, 217, 0.145) 0px 0px 0px 1px, rgba(0, 0, 0, 0) 0px 0px 0px 0px`
- `sm` — `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgb(255, 255, 255) 0px 1px 1px 0px inset`
**Z-index layers:** 7
# Shapes
**Radius scale**
- `sm` — `4px`
- `md` — `8px`
- `lg` — `12px`
- `lg` — `16px`
- `xl` — `24px`
# Components
**Detected patterns:** `buttons` · `inputs` · `links` · `navigation` · `footer` · `modals` · `tables` · `badges` · `tabs` · `switches`
**Anatomy**
| kind | variants | sizes | instances |
|---|---|---|---|
| button | outline | sm, lg, md | 51 |
# Do's and Don'ts
**Do's**
- Use `get`, `node`, `user` as the primary verbs in CTAs — these dominate the source.
- Write headings in **Sentence case** case, **tight** length.
- Address the reader with the pronoun posture **you-only**.
- Stay inside the **flat** material — match shadow and radius habits.
**Don'ts**
- Don't 6 font families — consider limiting to 2 (heading + body).
- Don't 551 !important rules — prefer specificity over overrides.
- Don't 7113 duplicate css declarations.
---
_Generated by [designlang](https://github.com/Manavarya09/design-extract) v13.0.0 from <https://resend.com>._
_Compatible with the DESIGN.md convention pioneered by [design-extractor.com](https://www.design-extractor.com) — extended with intent, material, voice, anatomy, and library detection._
Typography
interThe quick brown fox jumps
display · 56px / 600The quick brown fox jumps
headline · 36px / 500The quick brown fox jumps
subhead · 22px / 400The quick brown fox jumps
body · 16px / 400The quick brown fox jumps
caption · 12px / 500 · uppercaseAgent prompt
One self-contained system prompt with every resend.com token, anatomy slot and voice rule. Drop it into any AI agent and it builds in this brand without hallucinating.
paste into Claude · GPT · Cursor · Windsurf · v0
# You are building UI in the resend.com design system. Source: https://resend.com Extracted by designlang on 2026-06-25. ## Brand at a glance - title Resend · Email for developers - page intent landing - material flat - design grade B ## Colour - primary #d6ebfd - secondary #00a3ff - accent #44ffa4 - neutrals #f0f0f0 · #a1a4a5 · #ffffff · #f1f7fe · #464a4d · #6c6c6c ## Typography - families inter · commitMono · aBCFavorit · Helvetica - weights 400 · 500 · 600 · 700 - base size 16px ## Spacing - scale 1px · 20px · 24px · 28px · 40px · 48px · 62px · 80px · 96px · 104px · 144px · 150px ## Radii - scale 4px · 8px · 12px · 16px · 24px ## Motion - durations 150ms · 200ms · 300ms · 500ms ## Voice - tone neutral - pronoun you-only - headings Sentence case - CTA verbs get · node · user · features · company · resources ## Component anatomy - button variants: [object Object] · [object Object] · slots: true · true · false ## Accessibility - WCAG score 100% · failing pairs: 0 ## Build rules 1. Use the colours above. **Never invent a new hex.** If you need a shade between two existing colours, derive it via HSL adjustment from the closest extracted colour and call out the derivation. 2. Use the extracted typography families. If you need a missing weight, pick the nearest available weight from the list and note it. 3. Snap spacing values to the scale above. No off-scale paddings or margins. 4. Snap border radii to the scale above. 5. Match the voice: same tone, same pronoun stance, same heading style. Reuse the listed CTA verbs. 6. Aim for WCAG AA contrast minimum. When the brand colours fail, prefer the foreground colour on the background colour rather than mid-tone neutrals. 7. Reuse component anatomy when it exists — do not invent novel structures for things the site already has. ## Available context files designlang wrote these alongside this prompt. Reach for them when you need ground truth: - `<host>-design-tokens.json` — DTCG primitive · semantic · composite tokens - `<host>-tailwind.config.js` — Tailwind v3 config - `<host>-tailwind-v4.css` — Tailwind v4 `@theme` block - `<host>-tokens.d.ts` — TypeScript literal-union types - `<host>-variables.css` — bare CSS custom properties - `<host>-reset.css` — brand-aware base styles - `<host>-gradients.css` — `.grad-N` utility classes - `<host>-anatomy.tsx` — typed React component scaffolds - `<host>-shadcn-theme.css` — shadcn/ui theme - `<host>-theme.js` — React / Vue / Svelte theme object - `<host>-mcp.json` — MCP server payload (load via stdio) - `<host>.brand.pdf` — print-ready 13-chapter brand book When you reference the system in code, prefer importing from these files over hard-coding values. ## Output expectations When asked to "build a pricing page" or "make a card" or any UI: - Produce a single self-contained component file in the appropriate framework (React / Vue / Svelte — match what the user is using). - Use Tailwind utility classes wired to the v4 `@theme` if Tailwind is available; otherwise use the CSS custom properties from `variables.css`. - Write the headline copy using the brand voice; do not invent generic Lorem. - Annotate any choice where you had to bend the system, with a one-line `// note:` comment explaining what and why. ## One-line install ```bash npx designlang resend.com ``` Run this against any other URL to extract its system in the same shape as the one above. --- Generated by designlang. Re-extract by running `npx designlang resend.com`.
Drop this in any AI agent. It will build UI in the resend.com brand without hallucinating colours, fonts or component shapes.
MCP / Agent rules
The same payload the stdio MCP server hands to Claude Code, Cursor and Windsurf. Wire it into your editor and the agent answers brand-system questions with the actual extraction — not a guess.
How to wire MCP →
npx designlang mcp --url https://resend.com{
"colors": {
"all": [
{
"hex": "#f0f0f0",
"rgb": {
"r": 240,
"g": 240,
"b": 240,
"a": 1
},
"hsl": {
"h": 0,
"s": 0,
"l": 94
},
"count": 2604,
"contexts": [
"text",
"border",
"background"
]
},
{
"hex": "#a1a4a5",
"rgb": {
"r": 161,
"g": 164,
"b": 165,
"a": 1
},
"hsl": {
"h": 195,
"s": 2,
"l": 64
},
"count": 1171,
"contexts": [
"text",
"border"
]
},
{
"hex": "#ffffff",
"rgb": {
"r": 255,
"g": 255,
"b": 255,
"a": 1
},
"hsl": {
"h": 0,
"s": 0,
"l": 100
},
"count": 765,
"contexts": [
"text",
"border",
"background"
]
},
{
"hex": "#f1f7fe",
"rgb": {
"r": 241,
"g": 247,
"b": 254,
"a": 0.71
},
"hsl": {
"h": 212,
"s": 87,
"l": 97
},
"count": 504,
"contexts": [
"text",
"border"
]
},
{
"hex": "#464a4d",
"rgb": {
"r": 70,
"g": 74,
"b": 77,
"a": 1
},
"hsl": {
"h": 206,
"s": 5,
"l": 29
},
"count": 168,
"contexts": [
"text",
"border"
]
},
{
"hex": "#6c6c6c",
"rgb": {
"r": 108,
"g": 108,
"b": 108,
"a": 1
},
"hsl": {
"h": 0,
"s": 0,
"l": 42
},
"count": 132,
"contexts": [
"text",
"border"
]
},
{
"hex": "#d6ebfd",
"rgb": {
"r": 214,
"g": 235,
"b": 253,
"a": 0.19
},
"hsl": {
"h": 208,
"s": 91,
"l": 92
},
"count": 121,
"contexts": [
"border",
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]
},
{
"hex": "#44ffa4",
"rgb": {
"r": 68,
"g": 255,
"b": 164,
"a": 0.62
},
"hsl": {
"h": 151,
"s": 100,
"l": 63
},
"count": 78,
"contexts": [
"text",
"border",
"background"
]
},
{
"hex": "#000000",
"rgb": {
"r": 0,
"g": 0,
"b": 0,
"a": 1
},
"hsl": {
"h": 0,
"s": 0,
"l": 0
},
"count": 60,
"contexts": [
"background",
"text",
"border"
]
},
{
"hex": "#e5edfd",
"rgb": {
"r": 229,
"g": 237,
"b": 253,
"a": 0.482
},
"hsl": {
"h": 220,
"s": 86,
"l": 95
},
"count": 31,
"contexts": [
"text",
"border"
]
},
{
"hex": "#ffc446",
"rgb": {
"r": 255,
"g": 196,
"b": 70,
"a": 1
},
"hsl": {
"h": 41,
"s": 100,
"l": 64
},
"count": 30,
"contexts": [
"text",
"border"
]
},
{
"hex": "#70757e",
"rgb": {
"r": 112,
"g": 117,
"b": 126,
"a": 1
},
"hsl": {
"h": 219,
"s": 6,
"l": 47
},
"count": 16,
"contexts": [
"text",
"border"
]
},
{
"hex": "#ff9592",
"rgb": {
"r": 255,
"g": 149,
"b": 146,
"a": 1
},
"hsl": {
"h": 2,
"s": 100,
"l": 79
},
"count": 9,
"contexts": [
"text",
"border"
]
},
{
"hex": "#3b9eff",
"rgb": {
"r": 59,
"g": 158,
"b": 255,
"a": 1
},
"hsl": {
"h": 210,
"s": 100,
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},
"count": 8,
"contexts": [
"text",
"border"
]
},
{
"hex": "#baa7ff",
"rgb": {
"r": 186,
"g": 167,
"b": 255,
"a": 1
},
"hsl": {
"h": 253,
"s": 100,
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},
"count": 5,
"contexts": [
"text",
"border"
]
},
{
"hex": "#70b8ff",
"rgb": {
"r": 112,
"g": 184,
"b": 255,
"a": 1
},
"hsl": {
"h": 210,
"s": 100,
"l": 72
},
"count": 5,
"contexts": [
"text",
"border"
]
},
{
"hex": "#ffca16",
"rgb": {
"r": 255,
"g": 202,
"b": 22,
"a": 1
},
"hsl": {
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"s": 100,
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},
"count": 5,
"contexts": [
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"border"
]
},
{
"hex": "#22ff99",
"rgb": {
"r": 34,
"g": 255,
"b": 153,
"a": 0.118
},
"hsl": {
"h": 152,
"s": 100,
"l": 57
},
"count": 2,
"contexts": [
"background"
]
},
{
"hex": "#262a2d",
"rgb": {
"r": 38,
"g": 42,
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"a": 1
},
"hsl": {
"h": 206,
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},
"count": 2,
"contexts": [
"border"
]
},
{
"hex": "#0b0e14",
"rgb": {
"r": 11,
"g": 14,
"b": 20,
"a": 1
},
"hsl": {
"h": 220,
"s": 29,
"l": 6
},
"count": 1,
"contexts": [
"background"
]
},
{
"hex": "#8354fe",
"rgb": {
"r": 131,
"g": 84,
"b": 254,
"a": 0.21
},
"hsl": {
"h": 257,
"s": 99,
"l": 66
},
"count": 1,
"contexts": [
"background"
]
},
{
"hex": "#0077ff",
"rgb": {
"r": 0,
"g": 119,
"b": 255,
"a": 0.227
},
"hsl": {
"h": 212,
"s": 100,
"l": 50
},
"count": 1,
"contexts": [
"background"
]
},
{
"hex": "#fa8200",
"rgb": {
"r": 250,
"g": 130,
"b": 0,
"a": 0.133
},
"hsl": {
"h": 31,
"s": 100,
"l": 49
},
"count": 1,
"contexts": [
"background"
]
},
{
"hex": "#ff173f",
"rgb": {
"r": 255,
"g": 23,
"b": 63,
"a": 0.176
},
"hsl": {
"h": 350,
"s": 100,
"l": 55
},
"count": 1,
"contexts": [
"background"
]
},
{
"hex": "#cccccc",
"rgb": {
"r": 204,
"g": 204,
"b": 204,
"a": 1
},
"hsl": {
"h": 0,
"s": 0,
"l": 80
},
"count": 1,
"contexts": [
"background"
]
},
{
"hex": "#ff6465",
"rgb": {
"r": 255,
"g": 100,
"b": 101,
"a": 0.92
},
"hsl": {
"h": 360,
"s": 100,
"l": 70
},
"count": 1,
"contexts": [
"background"
]
},
{
"hex": "#ffd60a",
"rgb": {
"r": 255,
"g": 214,
"b": 10,
"a": 1
},
"hsl": {
"h": 50,
"s": 100,
"l": 52
},
"count": 1,
"contexts": [
"background"
]
},
{
"hex": "#00a3ff",
"rgb": {
"r": 0,
"g": 163,
"b": 255,
"a": 1
},
"hsl": {
"h": 202,
"s": 100,
"l": 50
},
"count": 1,
"contexts": [
"background"
]
}
]
},
"regions": [
{
"role": "nav",
"tag": "header",
"bounds": {
"x": 0,
"y": 0,
"w": 1280,
"h": 58
},
"heading": null,
"buttonCount": 8,
"cardCount": 21,
"className": "sticky top-0 z-40 transition duration-200 ease-in-out after:content-[\"\"] after:absolute after:inset-0 after:bg-black/60 after:backdrop-blur-md after:opacity-0 after:transition-opacity after:bg-[url(\"/static/texture-btn.png\")] before:absolute before:opacity-0 before:inset-0 before:-bottom-30 before:z-50 before:backdrop-blur-2xl before:backdrop-brightness-200 before:pointer-events-none after:pointer-events-none before:[mask-image:linear-gradient(black,black)] before:[mask-size:100%_1px] before:[mask-repeat:no-repeat] before:mask-[0_calc(100%-7.5rem)]"
},
{
"role": "cta",
"tag": "section",
"bounds": {
"x": 0,
"y": 58,
"w": 1280,
"h": 800
},
"heading": "Email for\ndevelopers",
"buttonCount": 1,
"cardCount": 7,
"className": "mx-auto max-w-5xl px-6 pb-8 md:h-screen md:max-h-[950px] md:max-w-7xl"
},
{
"role": "content",
"tag": "section",
"bounds": {
"x": 0,
"y": 938,
"w": 1280,
"h": 479
},
"heading": null,
"buttonCount": 0,
"cardCount": 14,
"className": "mx-auto px-6 py-12 sm:py-24 max-w-5xl md:max-w-7xl relative rounded-3xl border-t border-slate-6 mt-20 flex flex-col items-center"
},
{
"role": "hero",
"tag": "section",
"bounds": {
"x": 0,
"y": 1417,
"w": 1280,
"h": 1295.59375
},
"heading": "Integrate this afternoon",
"buttonCount": 23,
"cardCount": 59,
"className": "mx-auto px-6 py-12 sm:py-24 max-w-5xl md:max-w-7xl"
},
{
"role": "nav",
"tag": "header",
"bounds": {
"x": 129,
"y": 2019.59375,
"w": 1022,
"h": 64
},
"heading": null,
"buttonCount": 10,
"cardCount": 28,
"className": "flex h-16 items-center justify-between border-b border-slate-6 px-0 md:px-4"
},
{
"role": "footer",
"tag": "footer",
"bounds": {
"x": 129,
"y": 2559.59375,
"w": 1004,
"h": 56
},
"heading": null,
"buttonCount": 0,
"cardCount": 2,
"className": "absolute bottom-0 left-0 z-30 flex w-full max-w-[calc(100%_-_18px)] items-center gap-4 bg-gradient-to-t from-black via-black px-4 pb-3 pt-5"
},
{
"role": "testimonials",
"tag": "section",
"bounds": {
"x": 0,
"y": 2712.59375,
"w": 1280,
"h": 974.578125
},
"heading": "First-class\ndeveloper experience",
"buttonCount": 2,
"cardCount": 50,
"className": "mx-auto px-6 py-12 sm:py-24 max-w-5xl md:max-w-7xl"
},
{
"role": "hero",
"tag": "section",
"bounds": {
"x": 0,
"y": 3687.171875,
"w": 1280,
"h": 1358.203125
},
"heading": "Write using a delightful editor",
"buttonCount": 1,
"cardCount": 7,
"className": "mx-auto px-6 py-12 sm:py-24 max-w-5xl md:max-w-7xl"
},
{
"role": "content",
"tag": "section",
"bounds": {
"x": 0,
"y": 5045.375,
"w": 1280,
"h": 899.375
},
"heading": "Go beyond editing",
"buttonCount": 0,
"cardCount": 0,
"className": "mx-auto px-6 py-12 sm:py-24 max-w-5xl md:max-w-7xl"
},
{
"role": "pricing",
"tag": "section",
"bounds": {
"x": 0,
"y": 5944.75,
"w": 1280,
"h": 1367.203125
},
"heading": "Develop emails using React",
"buttonCount": 5,
"cardCount": 14,
"className": "mx-auto px-6 py-12 sm:py-24 max-w-5xl md:max-w-7xl"
},
{
"role": "nav",
"tag": "header",
"bounds": {
"x": 25,
"y": 6516.953125,
"w": 1230,
"h": 48
},
"heading": null,
"buttonCount": 0,
"cardCount": 7,
"className": "flex h-12 items-center border-b border-slate-6 px-4"
},
{
"role": "sidebar",
"tag": "aside",
"bounds": {
"x": 25,
"y": 6564.953125,
"w": 200,
"h": 650
},
"heading": null,
"buttonCount": 4,
"cardCount": 4,
"className": "flex-shirk-0 w-full overflow-auto border-b border-slate-6 px-2 py-2.5 md:min-w-[12.5rem] md:max-w-[12.5rem] md:border-b-0 md:border-r"
},
{
"role": "hero",
"tag": "section",
"bounds": {
"x": 0,
"y": 7311.953125,
"w": 1280,
"h": 940.921875
},
"heading": "Reach humans, not spam folders",
"buttonCount": 8,
"cardCount": 9,
"className": "mx-auto sm:py-24 relative mt-12 max-w-5xl overflow-hidden rounded-3xl border-t border-slate-6 px-6 py-20 md:mt-0 md:max-w-7xl"
},
{
"role": "features",
"tag": "section",
"bounds": {
"x": 0,
"y": 8884.265625,
"w": 1280,
"h": 1351.125
},
"heading": "Everything in your control",
"buttonCount": 3,
"cardCount": 6,
"className": "mx-auto px-6 py-12 sm:py-24 max-w-5xl md:max-w-7xl"
},
{
"role": "testimonials",
"tag": "section",
"bounds": {
"x": 0,
"y": 10235.390625,
"w": 1280,
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