Eraser — decoded design system

eraser.io · dark · modern · custom · deep decode — measured live

Eraser'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/eraser.io.

Decoded design system

Eraser's decoded design system: background #0B0B0B, text #E3E3E3, accent #FFFFFF, link #E8E8E8, primary #2866DF; type scale h1 90px / h2 72px / body 14px; 4px spacing base; 8px 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.
• accent, button_bg are all #FFFFFF — one role, not several (the action color).
• accent #FFFFFF — 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 #2866DF — a brand color — but the call-to-action uses #FFFFFF, not this.
• link #E8E8E8 — reads as a neutral UI color, not a link accent — verify against the reference (action = #FFFFFF).
• secondary #00A9E5 — 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: National 2 Condensed
• Body: Inter
• Mono: Jetbrainsmono
• h1: 90px
• h2: 72px
• body: 14px

Spacing

• base unit: 4px
• scale: 6px, 8px, 10px, 12px, 13px, 16px, 18px, 20px, 24px, 30px

Radii

• base: 8px
• button: 4px

Shadows (elevation)

• card: rgba(0, 0, 0, 0.3) 6px 6px 0px 0px

Motion

Micro-interactions run at 250ms (dominant) with ease.

• durations: 250ms · 200ms · 300ms
• easings: ease

Native design tokens

Button states (measured)

• primary hover: background rgba(255, 255, 255, 0.7)
• primary focus: outline 1px auto rgb(16, 16, 16)

Layout (measured)

• common grid: 2 columns

Motion choreography (measured)

Load order: img.blink-cursor → div.nav-wrapper-v2 → div.nav-wrapper-v2

Responsive (measured)

• breakpoints: 480px · 768px · 992px · 1440px
• mobile (390px): hero 55px · nav hamburger

Install it

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

npx shadcn add mozaika.design/r/decode/eraser.io

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

Export: DESIGN.md

# Eraser — Design System

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

## Colors

| Role | Value |
|------|-------|
| bg | `#0B0B0B` |
| surface | `#171717` |
| border | `#2B2B2B` |
| text | `#E3E3E3` |
| text_muted | `#909090` |
| primary | `#2866DF` |
| accent | `#FFFFFF` |
| link | `#E8E8E8` |
| secondary | `#00A9E5` |
| button_bg | `#FFFFFF` |
| button_text | `#171717` |

**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.
- `accent`, `button_bg` are all `#FFFFFF` — one role, not several (your action color).
- **accent** `#FFFFFF` — 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** `#2866DF` — a brand color — but the call-to-action uses #FFFFFF, not this.
- **link** `#E8E8E8` — reads as a neutral UI color, not a link accent — verify against the reference (action = #FFFFFF).
- **secondary** `#00A9E5` — 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): `#171717` 56.6% · `#020202` 21.6% · `#DDDEDC` 11.2% · `#2D3038` 10.6%

## Typography

- Heading: **National 2 Condensed** _(free fallback: Newsreader)_
- Body: **Inter**
- Mono: **Jetbrainsmono** _(measured)_

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 90px / 700 · lh 77px · tracking -0.45px |
| h2 | 72px / 700 · lh 61px · tracking -0.36px |
| h3 | 26px / 400 · lh 32px · tracking -0.5px |
| body | 14px / 400 · lh 17px |
| small | 13px / 600 · lh 20px |

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

> **Fonts —** National 2 Condensed may be proprietary — safe free fallback: Newsreader (Google Fonts). Inter — free, on Google.

## Spacing
- base unit: 4px (inferred from the measured scale)
- measured scale: 6px, 8px, 10px, 12px, 13px, 16px, 18px, 20px, 24px, 30px — snap all gaps/padding to these
- section rhythm: 90px top/bottom padding per section (measured)

## Radius
- base: 8px
- button: 4px
- card: 4px
- sharp: 3px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#FFFFFF` / `#171717` | none | 4px | 8px 17.92px 8px 17.92px | 600 13.0016px | none |
| secondary | `#1C1C1C` / `#FFFFFF` | 1px solid rgb(28, 28, 28) | 4px | 8px 18px 8px 18px | 600 14px | none |

**States (measured, not guessed)**

- primary hover: background `rgba(255, 255, 255, 0.7)`
- primary focus: outline `1px auto rgb(16, 16, 16)`
- secondary hover: border `1px solid rgb(49, 49, 49)` · background `#313131`
- transition: `all 0.25s ease`

## Shadows (elevation)
- card: `rgba(0, 0, 0, 0.3) 6px 6px 0px 0px`

## Motion
- durations: 250ms (dominant) · 200ms · 300ms
- easings: `ease` (dominant)

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 |
|-------|-------|
| `--grey-600` | `#666` |
| `--bg-color` | `#171717` |
| `--grey-1400` | `#f6f6f6` |
| `--grey-100` | `#1c1c1c` |
| `--grey-500` | `#4b4b4b` |
| `--grey-1200` | `#e8e8e8` |

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

## Layout (measured)
- common grid: 2-col

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 201 | 1268 | — | — | 64/80 | — |
| 1469 | 474 | — | — | 90/90 | — |
| 1943 | 1077 | 2 | 24 | 90/56 | 6/94 |
| 3020 | 1403 | 2 | 24 | 90/120 | 6/94 |
| 4424 | 1549 | 2 | 24 | 90/120 | 6/94 |

## Motion choreography (measured)
Load order: `img.blink-cursor` @0ms → `div.nav-wrapper-v2` @228ms → `div.nav-wrapper-v2` @228ms

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

## Components (measured)
- link: #4B4B4B · underline

## Responsive (measured)
- breakpoints: 480px · 768px · 992px · 1440px
- mobile (390px): hero 55px · body 13px · 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 Eraser's publicly-visible CSS (colors, fonts, spacing, motion) — not affiliated with eraser.io. No screenshots stored. Removal requests: hello@mozaika.design.