Rho — decoded design system

rho.co · light · professional · custom · deep decode — measured live

Rho's design system, decoded live by Mozaika: measured color roles, type scale, buttons with real hover/focus states, motion and the brand's own tokens.

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

Decoded design system

Rho's decoded design system: background #FFFFFF, text #212529, accent #05ECC1, link #CDFBF2, primary #05ECC1; type scale h1 88px / h2 40px / body 16px; 8px spacing base; 8px base radius. The single interactive/action color is #05ECC1 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Using these colors

• Action color #05ECC1 — the single interactive color; only on things you click or must notice, never large fills.
• primary, accent, button_bg are all #05ECC1 — one role, not several (the action color).
• accent #05ECC1 — 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 #CDFBF2 — 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 #64748B — 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.

Typography

• Heading: Basier
• Body: Inter
• h1: 88px
• h2: 40px
• body: 16px

Spacing

• base unit: 8px
• scale: 2px, 4px, 6px, 8px, 10px, 12px, 16px, 24px, 32px, 40px

Radii

• base: 8px
• button: 4px

Shadows (elevation)

• card: rgba(0, 0, 0, 0.08) 0px 4px 16px 0px

Motion

Micro-interactions run at 220ms (dominant) with cubic-bezier(0.88, 0.19, 0.58, 0.78).

• durations: 220ms · 600ms · 200ms
• easings: cubic-bezier(0.88, 0.19, 0.58, 0.78) · ease
• animated properties: background-color, opacity

Native design tokens

…and 110 more measured on the page.

Button states (measured)

• primary hover: background oklch(0.9 0.1363 172.97)
• primary focus: outline 1px dashed rgb(0, 0, 0)

Layout (measured)

• container max-width: 1440px
• nav: 80px fixed
• common grid: 3 columns

Motion choreography (measured)

Load order: div.Circle_root__OCGGX×2 → div.CircleItem_proof__9OQRu×4 → div.SocialProofWall_marqueet → div.SocialProofWall_marqueet → button.button--blank → button.button--blank

Input (measured)

height 60px · radius 6px

Responsive (measured)

• breakpoints: 375px · 550px · 580px · 600px · 640px · 768px
• mobile (390px): hero 49px · nav hamburger

Install it

Drop this measured system into any shadcn/Tailwind project in one command:

npx shadcn add mozaika.design/r/decode/rho.co

registry item · or query it over MCP: get_design_system("Rho")

Export: DESIGN.md

# Rho — Design System

> light, professional, medium, custom — deep decode (measured live)

## Colors

| Role | Value |
|------|-------|
| bg | `#FFFFFF` |
| surface | `#F1F1F2` |
| border | `#DDDEDE` |
| text | `#212529` |
| text_muted | `#75777A` |
| primary | `#05ECC1` |
| accent | `#05ECC1` |
| link | `#CDFBF2` |
| secondary | `#64748B` |
| button_bg | `#05ECC1` |
| button_text | `#151716` |

**Using these colors**

- **Action color** `#05ECC1` — 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 `#05ECC1` — one role, not several (your action color).
- **accent** `#05ECC1` — 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** `#CDFBF2` — 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** `#64748B` — 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): `#FFFFFF` 80.5% · `#0C101F` 11.6% · `#9CA6A5` 4.1% · `#262930` 2.2%

## Typography

- Heading: **Basier** _(free fallback: Newsreader)_
- Body: **Inter**

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 88px / 400 · lh 88px · tracking 1.28px |
| h2 | 40px / 600 · lh 40px · tracking 0.8px |
| h3 | 24px / 400 · lh 22px |
| body | 16px / 400 · lh 24px |
| small | 14px / 400 · lh 14px · tracking 0.14px |

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

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

## Spacing
- base unit: 8px (inferred from the measured scale)
- measured scale: 2px, 4px, 6px, 8px, 10px, 12px, 16px, 24px, 32px, 40px — snap all gaps/padding to these
- section rhythm: 90px top/bottom padding per section (measured)

## Radius
- base: 8px
- button: 4px
- card: 32px
- pill: 9999px
- sharp: 2px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `oklch(0.84 0.1608 173.06)` / `oklch(0.2 0.0037 164.66)` | none | 4px | 0px 16px 0px 16px | 500 14px / 0.14px | none |
| secondary | `#FFFFFF` / `#0C101F` | 1px solid rgb(255, 255, 255) | 2px | 12px 10px 12px 10px | 600 13.008px / 0.13008px | none |

**States (measured, not guessed)**

- primary hover: background `oklch(0.9 0.1363 172.97)`
- primary focus: outline `1px dashed rgb(0, 0, 0)`
- transition: `all 0.22s cubic-bezier(0.88, 0.19, 0.58, 0.78)`

## Shadows (elevation)
- card: `rgba(0, 0, 0, 0.08) 0px 4px 16px 0px`

## Motion
- durations: 220ms (dominant) · 600ms · 200ms
- easings: `cubic-bezier(0.88, 0.19, 0.58, 0.78)` (dominant) · `ease`
- animated properties: background-color, opacity

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 |
|-------|-------|
| `--brand-caribbean-100-30-opacity` | `oklch(93.67% 0.055 165.29/0.3)` |
| `--brand-caribbean-100` | `oklch(0.9698 0.0422 174.34)` |
| `--brand-caribbean-200` | `oklch(0.9 0.1363 172.97)` |
| `--brand-caribbean-300` | `oklch(0.84 0.1608 173.06)` |
| `--brand-caribbean-400` | `oklch(0.6479 0.1212 174.82)` |
| `--brand-abyss-300` | `oklch(0.58 0.0113 164.62)` |
| `--brand-abyss-400` | `oklch(0.26 0.0048 174.04)` |
| `--brand-abyss-500` | `oklch(0.2 0.0037 164.66)` |
| `--brand-moon-100` | `oklch(1 0 0)` |
| `--brand-moon-150` | `oklch(0.98 0.0021 197.1)` |
| `--brand-moon-200` | `oklch(0.96 0.0045 179.73)` |
| `--brand-moon-250` | `oklch(0.8993 0.01 181.38)` |

_…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 1440px · common grid: 3-col
- nav: 80px fixed · bg oklch(1 0 0)

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 0 | 1710 | — | — | 180/0 | — |
| 739 | 971 | 4 | — | 0/0 | 4/46/46/4 |
| 810 | 900 | — | — | 60/90 | — |
| 1710 | 1016 | — | — | 0/0 | — |
| 2966 | 734 | 3 | — | 0/0 | — |
| 4096 | 1137 | 3 | 32 | 90/90 | — |

## Motion choreography (measured)
Load order: `div.Circle_root__OCGGX`×2 @0ms → `div.CircleItem_proof__9OQRu`×4 @0ms → `div.SocialProofWall_marqueet` @1ms → `div.SocialProofWall_marqueet` @1ms → `button.button--blank` @435ms → `button.button--blank` @435ms
- `div.CircleItem_proof__9OQRu` ×4 — backgroundColor oklch(0.98 0.0021 197.1)→oklch(0.98 0.0021 197.1) — 3900ms ease · loops

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

## Components (measured)
- input: h 60px · r 6px · border 1px solid oklch(0.8993 0.01 181.38) · bg oklch(0.96 0.0045 179.73) · placeholder #757575
- card ×3: pad 32px 32px 32px 32px · r 8px · bg oklch(0.96 0.0045 179.73)
  - hover: font-weight `400` · letter-spacing `normal`
- link: oklch(0.2 0.0037 164.66) · no underline

## Responsive (measured)
- breakpoints: 375px · 550px · 580px · 600px · 640px · 768px
- mobile (390px): hero 49px · body 16px · nav: hamburger

## 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.

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An automated reading of Rho's publicly-visible CSS (colors, fonts, spacing, motion) — not affiliated with rho.co. No screenshots stored. Removal requests: hello@mozaika.design.