MozaikaDesign system

LaunchDarkly — Design System

dark · modern · high · custom · confidence 92% · deep decode

LaunchDarkly pairs geometric Sora at 80px/700 with Söhne at 16px on charcoal #191919, then detonates lime #DDFF46 buttons against it — feature-flag risk management styled like a rave flyer for platform engineers. Product panels stack release, AI-config and observability UI in tight cards; the asymmetric bottom-rounded button corners are the tell that the system sweats details.

Open in Mozaika →

This is a static, crawlable rendering for search & AI engines. The interactive version — filters, live decode console, copy & export — is at https://mozaika.design/ds/launchdarkly.

Tokens

LaunchDarkly's decoded design system: background #191919, text #ECECEE, accent #DDFF46, link #FF9D29, primary #DDFF46; type scale h1 80px / h2 64px / body 14px; 4px spacing base; 16px base radius. The single interactive/action color is #DDFF46 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

RoleValue
bg#191919
surface#252525
border#383838
text#ECECEE
text_muted#9B9B9D
primary#DDFF46
accent#DDFF46
link#FF9D29
secondary#405BFF
button_bg#DDFF46
button_text#191919

Using these colors

Typography

Spacing

Radii

Motion

Micro-interactions run at 300ms (dominant) with ease.

Native design tokens

TokenValue
--border#d8e5ee
--green-900#007844
--cyan-800#288b9f
--blue-400#7084ff
--pink-600#d9305b
--refresh-grey-800#212121
--purple-200#f1e5fa
--refresh-lime-100#aaec3a
--yellow-900#818c1f
--black-00#2c2c2c

…and 110 more measured on the page.

Button states (measured)

Layout (measured)

Motion choreography (measured)

Load order: div.primitives-module__Pbeuw → div.styles-module__5F-SCq__w×16 → button.styles-module__0nMkBW__p → div.Cost-module__gRBZNa__rev → div.Toxicity-module__IGtOPW_ → div.primitives-module__Pbeuw×4

Scroll reveal: 2 elements rest at a pre-reveal state, animate in over 22000ms.

Stagger: div ×16 — 80ms apart.

Input (measured)

height 56px · radius 0px

Responsive (measured)

Per-section tokens (11)

Export: DESIGN.md

# LaunchDarkly — Design System

> dark, modern, high, custom — deep decode (measured live)

LaunchDarkly pairs geometric Sora at 80px/700 with Söhne at 16px on charcoal #191919, then detonates lime #DDFF46 buttons against it — feature-flag risk management styled like a rave flyer for platform engineers. Product panels stack release, AI-config and observability UI in tight cards; the asymmetric bottom-rounded button corners are the tell that the system sweats details.

## Colors

| Role | Value |
|------|-------|
| bg | `#191919` |
| surface | `#252525` |
| border | `#383838` |
| text | `#ECECEE` |
| text_muted | `#9B9B9D` |
| primary | `#DDFF46` |
| accent | `#DDFF46` |
| link | `#FF9D29` |
| secondary | `#405BFF` |
| button_bg | `#DDFF46` |
| button_text | `#191919` |

**Using these colors**

- **Action color** `#DDFF46` — the single interactive color; it appears only on things you click or must notice (buttons, key highlights), never on large fills or backgrounds.
- `primary`, `accent`, `button_bg` are all `#DDFF46` — one role, not several (your action color).
- **accent** `#DDFF46` — THE accent / action color — interactive & must-notice only (buttons, links, focus, one key highlight); never large fills or backgrounds. Scarcity is what makes it read as designed.
- **link** `#FF9D29` — inline text links and link-styled controls.
- **secondary** `#405BFF` — optional secondary accent — LOW decode confidence; use rarely (a status color or a single decorative moment) or omit it entirely. Prefer one accent unless the reference clearly shows two.
- **Page coverage** (full-page screenshot pixels): `#191919` 53.5% · `#070707` 19.9% · `#FDFEF9` 16.6% · `#858292` 10%

## Typography

- Heading: **Arial**
- Body: **Arial**
- Mono: **monoFont** _(measured)_

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 80px / 700 · lh 80px · tracking -2px |
| h2 | 64px / 700 · lh 64px · tracking -3.2px |
| h3 | 60px / 600 · lh 60px · tracking -1.2px |
| body | 16px / 400 · lh 24px |
| small | 15px / 400 · lh 24px |

- Weight ladder: 400 · 500 · 600 · 700 — use these exact measured weights, not the 400/600 defaults.

> **Fonts —** Arial — system font, no web load needed.

## Spacing
- base unit: 4px (inferred from the measured scale)
- measured scale: 5px, 6px, 8px, 10px, 12px, 16px, 20px, 22px, 24px, 31px — snap all gaps/padding to these
- section rhythm: 120px top/bottom padding per section (measured)

## Radius
- base: 16px
- button: 12px
- card: 16px
- pill: 9999px
- sharp: 2px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#DDFF46` / `#191919` | 1px solid rgb(25, 25, 25) | 12px | 10px 12px 10px 16px | 500 18px / -0.18px | none |
| secondary | `rgba(0, 0, 0, 0)` / `#FFFFFF` | 1px solid rgba(0, 0, 0, 0) | 8px | 8px 12px 8px 12px | 400 16px | none |

**States (measured, not guessed)**

- primary hover: border `1px solid rgb(255, 255, 255)` · color `#FFFFFF`
- primary focus: outline `1px auto rgb(16, 16, 16)`
- secondary hover: border `1px solid rgba(255, 255, 255, 0.1)` · background `#2C2C2C`
- transition: `background-color 0.3s ease`

## Motion
- durations: 300ms (dominant) · 200ms · 160ms
- easings: `ease` (dominant) · `ease-in`
- animated properties: transform, border-color, background-color, color

Micro-interactions use the dominant duration + easing; nothing on the page animates slower than the longest duration above — don't invent springier motion.

## Their own tokens (verbatim from :root)

| Token | Value |
|-------|-------|
| `--border` | `#d8e5ee` |
| `--green-900` | `#007844` |
| `--cyan-800` | `#288b9f` |
| `--blue-400` | `#7084ff` |
| `--pink-600` | `#d9305b` |
| `--refresh-grey-800` | `#212121` |
| `--purple-200` | `#f1e5fa` |
| `--refresh-lime-100` | `#aaec3a` |
| `--yellow-900` | `#818c1f` |
| `--black-00` | `#2c2c2c` |
| `--pink` | `#ff35a2` |
| `--refresh-grey-500` | `#58595b` |

_…and 108 more measured on the page._

Prefer these names when extending their system — it's the brand's actual vocabulary.

## Layout (measured)
- container max 1416px · common grid: 2-col
- nav: 24px

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 4 | 1060 | — | — | 0/0 | — |
| 1228 | 2721 | 2 | 56 | 0/0 | 40/60 |
| 3949 | 830 | — | — | 120/0 | — |
| 4795 | 872 | 2 | 40 | 0/0 | — |

## Motion choreography (measured)
Load order: `div.primitives-module__Pbeuw` @0ms → `div.styles-module__5F-SCq__w`×16 @299ms → `button.styles-module__0nMkBW__p` @300ms → `div.Cost-module__gRBZNa__rev` @782ms → `div.Toxicity-module__IGtOPW_` @965ms → `div.primitives-module__Pbeuw`×4 @1121ms
- `div.styles-module__5F-SCq__w` ×16 — opacity 0→1 · transform translate3d(0px, 120px, 0px)→translateZ(0px) — 700ms cubic-bezier(0.22, 0.61, 0.36, 1)
- `div.primitives-module__Pbeuw` — transform translateX(0px)→translateX(-50%) — 22000ms · loops
- stagger: `div` ×16 — 80ms apart
- scroll reveal: 2 elements rest at a pre-reveal state, animate in over 22000ms (2 revealed during the drive).

Rebuild the timeline, not just the durations — order, delays and staggers above are the choreography.

## Components (measured)
- input: h 56px · r 0px · bg rgba(0, 0, 0, 0) · placeholder #939598
- link: #405BFF · no underline

## Responsive (measured)
- breakpoints: 500px · 659px · 768px · 1024px · 1099px · 1260px
- mobile (390px): hero 34px · body 16px · nav: inline

## How to apply
Paste the Tailwind `@theme` (or CSS variables) as your base, then build each
section to its spec — verify every color, radius, and font against these tokens.
Hover/focus states, shadows and motion timings above are measured from the live page — match them exactly, don't re-guess them.

---

> **Decoded with Mozaika** — measured live, not guessed. Full decoded design system + one-command install: mozaika.design/ds/launchdarkly

Export: Tailwind v4 (@theme)

@theme {
  /* action color #DDFF46 — the one interactive color; buttons/links/emphasis only, never large fills. */
  --color-bg: #191919;
  --color-surface: #252525;
  --color-border: #383838;
  --color-text: #ECECEE;
  --color-text-muted: #9B9B9D;
  --color-primary: #DDFF46;  /* primary brand / action color. */
  --color-accent: #DDFF46;  /* THE accent / action color — interactive & must-notice only (buttons, links, focus, one key highlight); never large fills or backgrounds. Scarcity is what makes it read as designed. */
  --color-link: #FF9D29;  /* inline text links and link-styled controls. */
  --color-secondary: #405BFF;  /* optional secondary accent — LOW decode confidence; use rarely (a status color or a single decorative moment) or omit it entirely. Prefer one accent unless the reference clearly shows two. */
  --color-button-bg: #DDFF46;  /* primary-button fill — the main call-to-action color. */
  --color-button-text: #191919;
  /* fonts: Arial — system font, no web load needed. */
  --font-heading: "Arial", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Arial", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: "monoFont", ui-monospace, monospace;
  /* measured weights: 400, 500, 600, 700 — use these, not 400/600 */
  --text-hero: 80px; --font-weight-hero: 700; --leading-hero: 80px; --tracking-hero: -2px;
  --text-h2: 64px; --font-weight-h2: 700; --leading-h2: 64px; --tracking-h2: -3.2px;
  --text-h3: 60px; --font-weight-h3: 600; --leading-h3: 60px; --tracking-h3: -1.2px;
  --text-body: 16px; --font-weight-body: 400; --leading-body: 24px;
  --text-small: 15px; --font-weight-small: 400; --leading-small: 24px;
  --radius-base: 16px;
  --radius-button: 12px;
  --radius-card: 16px;
  --radius-pill: 9999px;
  --radius-sharp: 2px;
  --outline-focus: 1px auto rgb(16, 16, 16);  /* measured focus ring */
  --ease-brand: ease;
  --duration-fast: 160ms;  /* use: duration-[var(--duration-fast)] */
  --duration-base: 200ms;
  --duration-slow: 300ms;
  --section-y: 120px;  /* per-section vertical padding (measured) */
  --spacing: 4px;  /* measured base — drives the p-*/gap-* scale. steps seen on the page: 5, 6, 8, 10, 12, 16, 20, 22, 24, 31px */
}

Export: CSS variables

:root {
  /* action color #DDFF46 — the one interactive color; buttons/links/emphasis only, never large fills. */
  --bg: #191919;
  --surface: #252525;
  --border: #383838;
  --text: #ECECEE;
  --text-muted: #9B9B9D;
  --primary: #DDFF46;  /* primary brand / action color. */
  --accent: #DDFF46;  /* THE accent / action color — interactive & must-notice only (buttons, links, focus, one key highlight); never large fills or backgrounds. Scarcity is what makes it read as designed. */
  --link: #FF9D29;  /* inline text links and link-styled controls. */
  --secondary: #405BFF;  /* optional secondary accent — LOW decode confidence; use rarely (a status color or a single decorative moment) or omit it entirely. Prefer one accent unless the reference clearly shows two. */
  --button-bg: #DDFF46;  /* primary-button fill — the main call-to-action color. */
  --button-text: #191919;
  --font-heading: "Arial", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Arial", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: "monoFont", ui-monospace, monospace;
  --text-hero: 80px; --weight-hero: 700; --leading-hero: 80px; --tracking-hero: -2px;
  --text-h2: 64px; --weight-h2: 700; --leading-h2: 64px; --tracking-h2: -3.2px;
  --text-h3: 60px; --weight-h3: 600; --leading-h3: 60px; --tracking-h3: -1.2px;
  --text-body: 16px; --weight-body: 400; --leading-body: 24px;
  --text-small: 15px; --weight-small: 400; --leading-small: 24px;
  --radius: 16px;
  --radius-button: 12px;
  --radius-card: 16px;
  --radius-pill: 9999px;
  --radius-sharp: 2px;
  --focus-ring: 1px auto rgb(16, 16, 16);
  --ease: ease;
  --duration-fast: 160ms;
  --duration-base: 200ms;
  --duration-slow: 300ms;
  --section-y: 120px;
}

/* their own tokens, verbatim from the site's :root */
:root {
  --border: #d8e5ee;
  --green-900: #007844;
  --cyan-800: #288b9f;
  --blue-400: #7084ff;
  --pink-600: #d9305b;
  --refresh-grey-800: #212121;
  --purple-200: #f1e5fa;
  --refresh-lime-100: #aaec3a;
  --yellow-900: #818c1f;
  --black-00: #2c2c2c;
  --pink: #ff35a2;
  --refresh-grey-500: #58595b;
}
/* fonts: Arial — system font, no web load needed. */