Otter — decoded design system

otter.ai · light · modern · custom · deep decode — measured live

Otter'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/otter.ai.

Decoded design system

Otter's decoded design system: background #FFFFFF, text #000000, accent #1D25E2, link #1D25E2, primary #144FFF; type scale h1 58px / h2 55px / body 16px; 4px spacing base; 16px base radius. The single interactive/action color is #346E4A — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Using these colors

• Action color #346E4A — the single interactive color; only on things you click or must notice, never large fills.
• accent, link are all #1D25E2 — one role, not several (the action color).
• accent #1D25E2 — accent for emphasis — keep it rare on the page.
• primary #144FFF — a brand color — but the call-to-action uses #346E4A, not this.
• secondary #5A5DA3 — 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: Circular
• Body: Circular
• h1: 58px
• h2: 55px
• body: 16px

Spacing

• base unit: 4px
• scale: 4px, 8px, 12px, 14px, 16px, 19px, 23px, 31px, 35px, 39px

Radii

• base: 16px
• button: 2px

Shadows (elevation)

• card: rgba(0, 0, 0, 0.2) 0px 0px 18px 0px

Motion

Micro-interactions run at 300ms (dominant) with cubic-bezier(0.215, 0.61, 0.355, 1).

• durations: 300ms · 450ms · 350ms
• easings: cubic-bezier(0.215, 0.61, 0.355, 1) · ease
• animated properties: color, background-color, opacity, transform

Native design tokens

…and 10 more measured on the page.

Button states (measured)

• primary focus: outline 1px solid rgb(0, 0, 0)

Layout (measured)

• nav: 80px sticky, backdrop blur(8px)

Motion choreography (measured)

Load order: div.swiper-dot → div.otFlat → span.swiper-dot×2 → div.swiper-slide×8 → span.swiper-dot×2 → div.slider-dot-agent×2

Scroll reveal: 5 elements rest at opacity 0, translateY(-32px), animate in over 450ms.

Responsive (measured)

• breakpoints: 426px · 479px · 550px · 600px · 768px · 896px
• mobile (390px): hero 42px · nav hamburger

Install it

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

npx shadcn add mozaika.design/r/decode/otter.ai

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

Export: DESIGN.md

# Otter — Design System

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

## Colors

| Role | Value |
|------|-------|
| bg | `#FFFFFF` |
| surface | `#EFEFEF` |
| border | `#D8D8D8` |
| text | `#000000` |
| text_muted | `#606060` |
| primary | `#144FFF` |
| accent | `#1D25E2` |
| link | `#1D25E2` |
| secondary | `#5A5DA3` |
| button_bg | `#346E4A` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#346E4A` — the single interactive color; it appears only on things you click or must notice (buttons, key highlights), never on large fills or backgrounds.
- `accent`, `link` are all `#1D25E2` — one role, not several.
- **accent** `#1D25E2` — accent for emphasis — keep it rare on the page.
- **primary** `#144FFF` — a brand color — but the call-to-action uses #346E4A, not this.
- **secondary** `#5A5DA3` — 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` 92.1% · `#DFE1E4` 2% · `#4C6A6F` 2% · `#B9B9BB` 1.7%

## Typography

- Heading: **Circular** _(free fallback: Manrope)_
- Body: **Circular** _(free fallback: Manrope)_

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 58px / 300 · lh 64px · tracking -1.17px |
| h2 | 55px / 300 · lh 60px · tracking -1.09px |
| h3 | 47px / 300 · lh 56px · tracking -0.47px |
| body | 16px / 400 · lh 23px |
| small | 14px / 400 · lh 19px |

- Weight ladder: 300 · 400 · 500 · 600 · 700 — use these exact measured weights, not the 400/600 defaults.

> **Fonts —** Circular is proprietary — closest free match: Manrope (Google). Load Manrope; keep Circular first so licensed users still get it.

## Spacing
- base unit: 4px (inferred from the measured scale)
- measured scale: 4px, 8px, 12px, 14px, 16px, 19px, 23px, 31px, 35px, 39px — snap all gaps/padding to these
- section rhythm: 97px top/bottom padding per section (measured)

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

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#346E4A` / `#FFFFFF` | 1px solid rgb(52, 110, 74) | 2px | 12px 10px 12px 10px | 600 13.008px / 0.13008px | none |
| secondary | `rgba(29, 37, 226, 0)` / `#000000` | none | 9.74708px | 3.89883px 7.79767px 3.89883px 7.79767px | 400 15.5953px | none |

**States (measured, not guessed)**

- primary focus: outline `1px solid rgb(0, 0, 0)`
- secondary hover: background `rgba(29, 37, 226, 0.05)` · color `#1C24DE`

## Shadows (elevation)
- card: `rgba(0, 0, 0, 0.2) 0px 0px 18px 0px`

## Motion
- durations: 300ms (dominant) · 450ms · 350ms
- easings: `cubic-bezier(0.215, 0.61, 0.355, 1)` (dominant) · `ease`
- animated properties: color, background-color, opacity, transform

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 |
|-------|-------|
| `--background` | `#f5f8fa` |
| `--otter-dark-blue` | `#041d34` |
| `--otter-blue` | `#144fff` |
| `--otter-yello` | `#fee36f` |
| `--otter-dark-grey` | `#8294a5` |
| `--otter-light-grey` | `#e7eaee` |
| `--otter-cyan` | `#52d0f0` |
| `--otter-green` | `#419220` |
| `--otter-purple` | `#8a78f0` |
| `--otter-pink` | `#fb97b4` |
| `--otter-red` | `#fe565b` |
| `--dark-grey` | `#293a52` |

_…and 8 more measured on the page._

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

## Layout (measured)
- nav: 80px sticky · backdrop blur(8px) · bg rgba(255, 255, 255, 0.94)

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 80 | 860 | — | — | 0/0 | — |
| 941 | 2911 | — | — | 0/0 | — |
| 3852 | 933 | — | — | 0/0 | — |
| 4785 | 1125 | — | — | 0/0 | — |

## Motion choreography (measured)
Load order: `div.swiper-dot` @0ms → `div.otFlat` @629ms → `span.swiper-dot`×2 @863ms → `div.swiper-slide`×8 @5844ms → `span.swiper-dot`×2 @5844ms → `div.slider-dot-agent`×2 @5861ms
- scroll reveal: 5 elements rest at opacity 0, translateY(-32px), animate in over 450ms (2 revealed during the drive).

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

## Components (measured)
- card ×4: pad 0px 0px 0px 0px · r 31.1907px · bg rgba(0, 0, 0, 0)
  - hover: font-weight `400` · letter-spacing `-0.46786px`

## Responsive (measured)
- breakpoints: 426px · 479px · 550px · 600px · 768px · 896px
- mobile (390px): hero 42px · body 20px · 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.

← All decoded design systems

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