Google Calendar Mobile — decoded design system

calendar.google.com · light · consumer · deep decode — measured live

Google Calendar Mobile'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.

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/decode/calendar.google.com.

Decoded design system

Google Calendar Mobile's decoded design system: background #FFFFFF, text #202124, accent #2FB77A, link #616161, primary #2FB77A; type scale h1 54px / h2 44px / body 18px; 8px spacing base; 12px base radius. The single interactive/action color is #FFFFFF — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Using these colors

• Action color #FFFFFF — the single interactive color; only on things you click or must notice, never large fills.
• primary, accent are all #2FB77A — one role, not several (the action color).
• accent #2FB77A — accent for emphasis — keep it rare on the page.
• link #616161 — reads as a neutral UI color, not a link accent — verify against the reference (action = #FFFFFF).

Typography

• Heading: Google Sans
• Body: Google Sans Text
• h1: 54px
• h2: 44px
• body: 18px

Spacing

• base unit: 8px
• scale: 2px, 4px, 6px, 10px, 11px, 12px, 16px, 20px, 24px, 28px

Radii

• base: 12px
• button: 100px

Shadows (elevation)

• subtle: rgba(60, 64, 67, 0.3) 0px 2px 3px 0px, rgba(60, 64, 67, 0.15) 0px 6px 10px 4px
• card: rgba(54, 64, 67, 0.3) 0px 1px 2px 0px, rgba(54, 64, 67, 0.15) 0px 1px 3px 1px

Motion

Micro-interactions run at 200ms (dominant) with ease.

• durations: 200ms · 300ms · 400ms
• easings: ease · cubic-bezier(0.215, 0.61, 0.355, 1)
• animated properties: color, background-color, box-shadow, transform

Native design tokens

…and 4 more measured on the page.

Button states (measured)

• primary hover: border 1px solid rgb(138, 180, 248) · background #F1F3F4 · color #174EA6
• primary focus: outline 2px solid rgb(26, 115, 232)

Layout (measured)

• container max-width: 1440px
• common grid: 12 columns

Motion choreography (measured)

Scroll reveal: 3 elements rest at opacity 0, animate in over 0.5s ease.

Responsive (measured)

• breakpoints: 1024px
• mobile (390px): hero 36px · nav hamburger

Install it

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

npx shadcn add mozaika.design/r/decode/calendar.google.com

Or as a Meta Astryx theme — a ready defineTheme file with the measured hover/press states baked in:

curl -o src/themes/calendar.theme.ts https://mozaika.design/api/astryx/decode/calendar.google.com.ts

registry item · astryx theme · or query it over MCP: get_design_system("Google Calendar Mobile")

Export: DESIGN.md

# Google Calendar Mobile — Design System

> light, consumer, high — deep decode (measured live)

## Colors

| Role | Value |
|------|-------|
| bg | `#FFFFFF` |
| surface | `#F1F1F1` |
| border | `#DDDDDE` |
| text | `#202124` |
| text_muted | `#747577` |
| primary | `#2FB77A` |
| accent | `#2FB77A` |
| link | `#616161` |
| button_bg | `#FFFFFF` |
| button_text | `#1A73E8` |

**Using these colors**

- **Action color** `#FFFFFF` — 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` are all `#2FB77A` — one role, not several.
- **accent** `#2FB77A` — accent for emphasis — keep it rare on the page.
- **link** `#616161` — reads as a neutral UI color, not a link accent — verify against the reference (action = #FFFFFF).
- **Page coverage** (full-page screenshot pixels): `#FFFFFF` 92.1% · `#5A84AE` 3.2% · `#C7D2D9` 2.8% · `#E6EAEB` 1.9%

## Typography

- Heading: **Google Sans** _(free fallback: Newsreader)_
- Body: **Google Sans Text** _(free fallback: Newsreader)_

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 54px / 700 · lh 64px · tracking -0.5px |
| h2 | 44px / 500 · lh 54px · tracking -0.5px |
| h3 | 40px / 500 · lh 50px · tracking -0.5px |
| body | 18px / 400 · lh 28px · tracking 0.1px |
| small | 16px / 400 · lh 24px · tracking 0.2px |
| eyebrow | 11px / 600 · tracking 0.5px |

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

> **Fonts —** Google Sans may be proprietary — safe free fallback: Newsreader (Google Fonts). Google Sans Text may be proprietary — safe free fallback: Newsreader (Google Fonts).

## Spacing
- base unit: 8px (inferred from the measured scale)
- measured scale: 2px, 4px, 6px, 10px, 11px, 12px, 16px, 20px, 24px, 28px — snap all gaps/padding to these

## Radius
- base: 12px
- button: 100px
- card: 100px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#FFFFFF` / `#1A73E8` | 1px solid rgb(218, 220, 224) | 100px | 6px 16px 6px 16px | 500 14px / 0.2px | none |
| secondary | `rgba(0, 0, 0, 0)` / `#202124` | 2px solid rgba(0, 0, 0, 0) | 100px | 10px 20px 10px 20px | 500 16px / 0.1px | none |

**States (measured, not guessed)**

- primary hover: border `1px solid rgb(138, 180, 248)` · background `#F1F3F4` · color `#174EA6`
- primary focus: outline `2px solid rgb(26, 115, 232)`
- transition: `background-color 0.2s ease`

## Shadows (elevation)
- subtle: `rgba(60, 64, 67, 0.3) 0px 2px 3px 0px, rgba(60, 64, 67, 0.15) 0px 6px 10px 4px`
- card: `rgba(54, 64, 67, 0.3) 0px 1px 2px 0px, rgba(54, 64, 67, 0.15) 0px 1px 3px 1px`

## Motion
- durations: 200ms (dominant) · 300ms · 400ms
- easings: `ease` (dominant) · `cubic-bezier(0.215, 0.61, 0.355, 1)`
- animated properties: color, background-color, box-shadow, 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 |
|-------|-------|
| `--md-sys-color-primary` | `#1a73e8` |
| `--md-outlined-text-field-label-text-color` | `#3c4043` |
| `--md-outlined-select-text-field-label-text-color` | `#3c4043` |
| `--md-outlined-text-field-container-color` | `#fff` |
| `--md-menu-item-selected-container-color` | `#f1f3f4` |
| `--md-menu-item-hover-state-layer-color` | `#5f6368` |
| `--md-outlined-select-text-field-container-color` | `#fff` |
| `--md-outlined-text-field-error-label-text-color` | `#3c4043` |
| `--md-outlined-select-text-field-error-label-text-color` | `#3c4043` |
| `--newsletter-margin-inline-start` | `12px` |
| `--header-height` | `64px` |
| `--gws-action-bar-height` | `0px` |

_…and 2 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: 12-col
- nav: 0px fixed · bg #FFFFFF

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 88 | 504 | — | — | 0/0 | — |
| 844 | 385 | 12 | 24 | 0/0 | — |
| 1349 | 385 | 12 | 24 | 0/0 | — |
| 1854 | 434 | 12 | 24 | 0/0 | — |
| 2632 | 423 | 3 | 24 | 0/0 | — |
| 3174 | 666 | — | — | 0/0 | — |
| 3384 | 376 | 3 | 24 | 0/0 | — |
| 4010 | 500 | — | — | 0/0 | — |

## Motion choreography (measured)
- scroll reveal: 3 elements rest at opacity 0, animate in over 0.5s ease (0 revealed during the drive).

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

## Components (measured)
- link: #1A73E8 · underline — hover #174EA6

## Responsive (measured)
- breakpoints: 1024px
- mobile (390px): hero 36px · 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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> **Decoded with Mozaika** — measured live, not guessed. Full decoded design system + one-command install: mozaika.design/decode/calendar.google.com

← All decoded design systems

An automated reading of Google Calendar Mobile's publicly-visible CSS (colors, fonts, spacing, motion) — not affiliated with calendar.google.com. No screenshots stored. Removal requests: hello@mozaika.design.