Railway — Design System

dark · modern · medium · tailwind · confidence 92% · deep decode

Railway is infrastructure told as a night-train story: a deep aubergine #13111C sky, painterly mountain vistas behind the deploy card, and IBM Plex Serif headlines (54px/500) that give a devops tool the voice of a novel. Inter carries the 18px body while glowing track-lines and canvas-drawn diagrams animate the scroll into a continuous journey. Buttons stay quiet and borderless; the romance is in the atmosphere, not the chrome — a rare serif-led, illustration-first take on developer clouds.

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/railway.

Tokens

Railway's decoded design system: background #13111C, text #ECECEE, accent #553F83, link #291839, primary #1F132A; type scale h1 54px / h2 40px / body 18px; 8px spacing base; 6px base radius. The single interactive/action color is #553F83 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Using these colors

• Action color #553F83 — the single interactive color; only on things you click or must notice, never large fills.
• accent, secondary, button_bg are all #553F83 — one role, not several (the action color).
• accent #553F83 — 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.
• primary #1F132A — a brand color — but the call-to-action uses #553F83, not this.
• link #291839 — fails contrast on the background (~1.1:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference).

Typography

• Heading: IBM Plex Serif
• Body: Inter
• h1: 54px
• h2: 40px
• body: 18px

Spacing

• base unit: 8px
• scale: 4px, 6px, 8px, 12px, 16px, 24px, 32px, 40px, 64px, 80px

Radii

• base: 6px
• button: 8px

Motion

Micro-interactions run at 150ms (dominant) with ease-out.

• durations: 150ms · 200ms · 3000ms
• easings: ease-out · ease-in-out
• animated properties: transform, opacity, background-color, color

Native design tokens

…and 110 more measured on the page.

Button states (measured)

• primary focus: outline 1px auto rgb(16, 16, 16)

Layout (measured)

• container max-width: 1696px
• nav: 32px relative
• common grid: 3 columns

Motion choreography (measured)

Load order: div.flex×2 → div.osano-cm-info-dialog__in → div.osano-cm-window__dialog → button.osano-cm-dialog__close → button.osano-cm-dialog__close → button.osano-cm-dialog__close

Scroll reveal: 23 elements rest at opacity 0, translateY(24px), animate in over 3000ms.

Overlay recipe (measured)

dialog panel: #000000 · radius 12px · enter 200ms linear

Responsive (measured)

• breakpoints: 768px
• mobile (390px): hero 40px · nav inline

Per-section tokens (18)

• Hero — dark · bg #18212F · text #524B57 · 1 col · left
• Hero — dark · bg #13111B · text #4C4756 · 2 col · split
• Logo Wall — dark · bg #2B3437 · text #56545A · 1 col · left
• Pricing / Plans — dark · bg #181623 · text #585577 · 3 col · split
• Feature — dark · bg #1A2131 · text #0D0C13 · 1 col · left
• Pricing / Plans — dark · bg #13111B · text #595662 · 1 col · center
• Feature — dark · bg #13111B · text #323940 · 2 col · split
• Comparison — dark · bg #181623 · text #414350 · 1 col · left
• Feature — dark · bg #13111B · text #4E5658 · 1 col · left
• Feature — dark · bg #181623 · text #4B4A54 · 2 col · split
• Feature — dark · bg #1E2B2E · text #11101A · 1 col · left
• Testimonial / Social Proof — dark · bg #13111B · text #353642 · 1 col · center
• Feature — dark · bg #13111B · text #2D3039 · 1 col · left
• CTA / Sign-up — dark · bg #13111B · text #423054 · 3 col · split
• Testimonial / Social Proof — dark · bg #251823 · text #524750 · 1 col · left
• FAQ — dark · bg #181623 · text #D6D7D7 · 1 col · left
• Stats / Metrics — dark · bg #13111B · text #27262D · 3 col · split
• Footer — dark · bg #13111B · text #585663 · 2 col · split

Export: DESIGN.md

# Railway — Design System

> dark, modern, medium, tailwind — deep decode (measured live)

Railway is infrastructure told as a night-train story: a deep aubergine #13111C sky, painterly mountain vistas behind the deploy card, and IBM Plex Serif headlines (54px/500) that give a devops tool the voice of a novel. Inter carries the 18px body while glowing track-lines and canvas-drawn diagrams animate the scroll into a continuous journey. Buttons stay quiet and borderless; the romance is in the atmosphere, not the chrome — a rare serif-led, illustration-first take on developer clouds.

## Colors

| Role | Value |
|------|-------|
| bg | `#13111C` |
| surface | `#201E28` |
| border | `#33313B` |
| text | `#ECECEE` |
| text_muted | `#99989E` |
| primary | `#1F132A` |
| accent | `#553F83` |
| link | `#291839` |
| secondary | `#553F83` |
| button_bg | `#553F83` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#553F83` — the single interactive color; it appears only on things you click or must notice (buttons, key highlights), never on large fills or backgrounds.
- `accent`, `secondary`, `button_bg` are all `#553F83` — one role, not several (your action color).
- **accent** `#553F83` — 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.
- **primary** `#1F132A` — a brand color — but the call-to-action uses #553F83, not this.
- **link** `#291839` — fails contrast on the background (~1.1:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference).
- **Page coverage** (full-page screenshot pixels): `#13111C` 60.2% · `#222B3A` 33.2% · `#4E4B61` 6.6%

## Typography

- Heading: **IBM Plex Serif** _(free fallback: Newsreader)_
- Body: **Inter**

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 54px / 500 · lh 60px · tracking -1.96px |
| h2 | 36px / 400 · lh 48px · tracking -0.72px |
| h3 | 20px / 400 · lh 28px |
| body | 16px / 500 · lh 24px |
| small | 14px / 500 · lh 20px |

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

> **Fonts —** IBM Plex Serif may be proprietary — safe free fallback: Newsreader (Google Fonts). Inter — free, on Google.

## Spacing
- base unit: 8px (inferred from the measured scale)
- measured scale: 4px, 6px, 8px, 12px, 16px, 24px, 32px, 40px, 64px, 80px — snap all gaps/padding to these
- section rhythm: 96px top/bottom padding per section (measured)

## Radius
- base: 6px
- button: 8px
- card: 4px
- pill: 9999px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#553F83` / `#FFFFFF` | 1px solid rgba(255, 255, 255, 0.15) | 8px | 12px 24px 12px 24px | 500 20px / -0.2px | none |
| secondary | `rgba(0, 0, 0, 0)` / `#F7F7F8` | none | 6px | 0px 12px 0px 12px | 500 14px | none |

**States (measured, not guessed)**

- primary focus: outline `1px auto rgb(16, 16, 16)`
- secondary hover: background `rgba(255, 255, 255, 0.05)`
- transition: `filter 0.15s cubic-bezier(0.4, 0, 0.2, 1)`

## Motion
- durations: 150ms (dominant) · 200ms · 3000ms
- easings: `ease-out` (dominant) · `ease-in-out`
- animated properties: transform, opacity, 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 |
|-------|-------|
| `--osano-clear-dialog-background` | `rgba(24,13,67,0)` |
| `--osano-button-border-color` | `#33323e` |
| `--osano-button-background-color` | `#59497a` |
| `--osano-button-foreground-color` | `#FFFFFF` |
| `--osano-dialog-background-color` | `#13111c` |
| `--osano-dialog-foreground-color` | `#FFFFFF` |
| `--osano-info-dialog-overlay-color` | `rgba(0,0,0,0.45)` |
| `--osano-link-color` | `#ffffff` |
| `--osano-toggle-off-track-color` | `#535361` |
| `--osano-toggle-off-thumb-color` | `#FFFFFF` |
| `--osano-toggle-on-track-color` | `#13111c` |
| `--osano-toggle-on-thumb-color` | `#13111c` |

_…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 1696px · common grid: 3-col
- nav: 32px relative

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 124 | 1716 | 3 | — | 0/16 | 9/83/9 |
| 1840 | 1712 | — | — | 0/0 | — |
| 3552 | 765 | — | — | 0/0 | — |
| 4317 | 761 | — | — | 0/0 | — |

## Motion choreography (measured)
Load order: `div.flex`×2 @0ms → `div.osano-cm-info-dialog__in` @2114ms → `div.osano-cm-window__dialog` @2211ms → `button.osano-cm-dialog__close` @2211ms → `button.osano-cm-dialog__close` @2211ms → `button.osano-cm-dialog__close` @2211ms
- `div.bg-pink-200` — transform translateX(-40.9257%)→translateX(-39.9615%) — 150ms cubic-bezier(0, 0, 0.2, 1)
- `circle.animate-pulse-station` ×5 — opacity 1→0.1 · transform scale(0)→scale(1) — 3000ms cubic-bezier(0.25, 0.1, 0.25, 0.8) · loops
- scroll reveal: 23 elements rest at opacity 0, translateY(24px), animate in over 3000ms (7 revealed during the drive).
- overlay dialog (auto-opened): panel #000000 · r 12px · border 1px solid rgba(255, 255, 255, 0.1) · shadow 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 10px 15px -3px, rgba(0, 0, 0, 0.1) 0px 4px 6px -4px
  - enter: opacity from 0 · 200ms linear

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

## Components (measured)
- link: #A667E4 · underline

## Responsive (measured)
- breakpoints: 768px
- mobile (390px): hero 40px · 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/railway

Export: Tailwind v4 (@theme)

@theme {
  /* action color #553F83 — the one interactive color; buttons/links/emphasis only, never large fills. */
  --color-bg: #13111C;
  --color-surface: #201E28;
  --color-border: #33313B;
  --color-text: #ECECEE;
  --color-text-muted: #99989E;
  --color-primary: #1F132A;  /* a brand color — but the call-to-action uses #553F83, not this. */
  --color-accent: #553F83;  /* 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: #291839;  /* fails contrast on the background (~1.1:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference). */
  --color-secondary: #553F83;  /* same color as the action (see accent). */
  --color-button-bg: #553F83;  /* primary-button fill — the main call-to-action color. */
  --color-button-text: #FFFFFF;
  /* fonts: IBM Plex Serif may be proprietary — safe free fallback: Newsreader (Google Fonts). Inter — free, on Google. */
  --font-heading: "IBM Plex Serif", "Newsreader", Georgia, 'Times New Roman', serif;
  --font-body: "Inter", system-ui, -apple-system, 'Segoe UI', sans-serif;
  /* measured weights: 400, 500, 600, 700 — use these, not 400/600 */
  --text-hero: 54px; --font-weight-hero: 500; --leading-hero: 60px; --tracking-hero: -1.96px;
  --text-h2: 36px; --font-weight-h2: 400; --leading-h2: 48px; --tracking-h2: -0.72px;
  --text-h3: 20px; --font-weight-h3: 400; --leading-h3: 28px;
  --text-body: 16px; --font-weight-body: 500; --leading-body: 24px;
  --text-small: 14px; --font-weight-small: 500; --leading-small: 20px;
  --radius-base: 6px;
  --radius-button: 8px;
  --radius-card: 4px;
  --radius-pill: 9999px;
  --outline-focus: 1px auto rgb(16, 16, 16);  /* measured focus ring */
  --ease-brand: ease-out;
  --duration-fast: 150ms;  /* use: duration-[var(--duration-fast)] */
  --duration-base: 200ms;
  --duration-slow: 3000ms;
  --section-y: 96px;  /* per-section vertical padding (measured) */
  --spacing: 8px;  /* measured base — drives the p-*/gap-* scale. steps seen on the page: 4, 6, 8, 12, 16, 24, 32, 40, 64, 80px */
}

Export: CSS variables

:root {
  /* action color #553F83 — the one interactive color; buttons/links/emphasis only, never large fills. */
  --bg: #13111C;
  --surface: #201E28;
  --border: #33313B;
  --text: #ECECEE;
  --text-muted: #99989E;
  --primary: #1F132A;  /* a brand color — but the call-to-action uses #553F83, not this. */
  --accent: #553F83;  /* 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: #291839;  /* fails contrast on the background (~1.1:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference). */
  --secondary: #553F83;  /* same color as the action (see accent). */
  --button-bg: #553F83;  /* primary-button fill — the main call-to-action color. */
  --button-text: #FFFFFF;
  --font-heading: "IBM Plex Serif", "Newsreader", Georgia, 'Times New Roman', serif;
  --font-body: "Inter", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --text-hero: 54px; --weight-hero: 500; --leading-hero: 60px; --tracking-hero: -1.96px;
  --text-h2: 36px; --weight-h2: 400; --leading-h2: 48px; --tracking-h2: -0.72px;
  --text-h3: 20px; --weight-h3: 400; --leading-h3: 28px;
  --text-body: 16px; --weight-body: 500; --leading-body: 24px;
  --text-small: 14px; --weight-small: 500; --leading-small: 20px;
  --radius: 6px;
  --radius-button: 8px;
  --radius-card: 4px;
  --radius-pill: 9999px;
  --focus-ring: 1px auto rgb(16, 16, 16);
  --ease: ease-out;
  --duration-fast: 150ms;
  --duration-base: 200ms;
  --duration-slow: 3000ms;
  --section-y: 96px;
}

/* their own tokens, verbatim from the site's :root */
:root {
  --osano-clear-dialog-background: rgba(24,13,67,0);
  --osano-button-border-color: #33323e;
  --osano-button-background-color: #59497a;
  --osano-button-foreground-color: #FFFFFF;
  --osano-dialog-background-color: #13111c;
  --osano-dialog-foreground-color: #FFFFFF;
  --osano-info-dialog-overlay-color: rgba(0,0,0,0.45);
  --osano-link-color: #ffffff;
  --osano-toggle-off-track-color: #535361;
  --osano-toggle-off-thumb-color: #FFFFFF;
  --osano-toggle-on-track-color: #13111c;
  --osano-toggle-on-thumb-color: #13111c;
}
/* fonts: IBM Plex Serif may be proprietary — safe free fallback: Newsreader (Google Fonts). Inter — free, on Google. */