# AV01 design system

> AV01 design system measured from av01.media: Arimo font, 12 color hex codes, type scale, spacing and a free DESIGN.md. Dark theme with pill corners.

Canonical page: https://sitepeel.dev/design-md/av01.media/

AV01’s website (av01.media) uses the Arimo font on a #111827 background. Measured by Sitepeel on November 6, 2026.

## What font does AV01 use?

AV01 uses Arimo (weight 400) on av01.media. Page titles are 24px at weight 700 and body text is 16px. Measured on November 6, 2026.

- system-ui (weights 400, 700)
- Arimo (weights 400)

## AV01 colors: palette and hex codes

AV01’s main colors are #111827 (deep blue) for the background and #9CA3AF (blue) for text, with #0891B2 (dark cyan) as another accent. Measured on November 6, 2026.

- #111827: deep blue
- #9CA3AF: blue
- #FFFFFF: white
- #6B7280: cool slate
- #000000: near black
- #1F2937: deep blue
- #374151: dark blue
- #0891B2: dark cyan

## What is AV01 built with?

AV01’s website (av01.media) is built with React, React Router, Tailwind CSS, Cloudflare and Google Fonts. Measured on November 6, 2026.

- JavaScript framework: React 18.3.1, React Router 7.18.5
- Hosting & CDN: Cloudflare
- Analytics: Cloudflare Web Analytics, Google Analytics
- UI & CSS: Tailwind CSS 3.x
- Fonts & icons: Google Fonts, Lucide

## Questions and answers

### What font does AV01 use?

AV01’s website uses Arimo (weight 400). Page titles are 24px at weight 700 and body text is 16px. Measured on November 6, 2026.

### What are the AV01 colors and hex codes?

On av01.media: #111827 (deep blue) for the background and #9CA3AF (blue) for text, with #0891B2 (dark cyan) as another accent. The color palette above lists all 12 colors with their hex codes and where each one is used.

### What is the AV01 design system?

The design system on this page is av01.media’s, as measured on November 6, 2026: Arimo type, pill-shaped corners and a 4px spacing grid, written down as a DESIGN.md. It is not AV01’s own documentation.

### What is AV01 built with?

AV01’s website (av01.media) is built with React, React Router, Tailwind CSS, Cloudflare and Google Fonts. The full tech stack Sitepeel found: React, React Router, Cloudflare, Cloudflare Web Analytics, Tailwind CSS, Google Fonts, Lucide and Google Analytics. Measured on November 6, 2026.

### What is the AV01 DESIGN.md?

A plain-text file with AV01’s measured colors, type, spacing, corners and components as tokens, plus short rules, in the DESIGN.md format Google published with Stitch. Your AI coding agent reads it and builds in this style. More about DESIGN.md.

### How do I use it with Claude Code or Cursor?

Download the file and put it in your project’s root folder, then ask your agent to follow DESIGN.md. Step-by-step guides: Claude Code, Cursor, Codex, GitHub Copilot.

### Is this AV01’s official design system?

No. Sitepeel measured it from av01.media’s public page on November 6, 2026. It is an independent analysis, not made or approved by AV01.

### Can I use AV01’s style in my own product?

Use it to learn, prototype and compare. For a real product, make the style your own, and never copy AV01’s logo, name, pictures or text.

### How accurate are the values?

Each value was measured on the rendered page after it fully loaded, on desktop and mobile: colors where they appear, type with tracking, spacing, corners, shadows and hover states. Sites change, so check the date at the top.

## Files

- [DESIGN.md](https://sitepeel.dev/design-md/av01.media/DESIGN.md): the plain file to put in your project.
- [All brand DESIGN.md files](https://sitepeel.dev/design-md/examples/index.md)

Independent analysis by Sitepeel (sitepeel.dev), not affiliated with AV01.

## The DESIGN.md file

```markdown
---
version: alpha
name: AV01
description: "Dark monochrome interface measured from av01.media: system-ui type with Arimo, tonal surfaces and pill-shaped controls."
colors:
  background: "#111827"
  surface: "#111827"
  on-surface: "#9CA3AF"
  on-background: "#9CA3AF"
  on-surface-strong: "#FFFFFF"
  on-surface-variant: "#6B7280"
  surface-container-low: "#000000"
  overlay: "#00000099"
  outline: "#1F2937"
  outline-variant: "#374151"
  primary: "#9CA3AF"
  on-primary: "#000000"
  secondary: "#0891B2"
  error: "#F87171"
typography:
  headline-display:
    fontFamily: system-ui
    fontSize: 24px
    fontWeight: 700
    lineHeight: 1.33
  body-md:
    fontFamily: Arimo
    fontSize: 16px
    fontWeight: 400
    lineHeight: 1.5
  body-sm:
    fontFamily: system-ui
    fontSize: 12px
    fontWeight: 400
    lineHeight: 1.33
  label-md:
    fontFamily: system-ui
    fontSize: 16px
    fontWeight: 400
    lineHeight: 1.5
rounded:
  sm: 4px
  md: 8px
  lg: 10px
  full: 9999px
spacing:
  base: 4px
  xs: 4px
  sm: 8px
  md: 16px
  lg: 32px
  xl: 48px
  gutter: 16px
components:
  button-primary:
    textColor: "{colors.on-surface-strong}"
    rounded: "{rounded.lg}"
    padding: 5px 12px
    height: 31px
  button-ghost:
    textColor: "{colors.on-surface-strong}"
    typography: "{typography.body-md}"
    rounded: "{rounded.md}"
    padding: 8px
  input-field:
    backgroundColor: "{colors.background}"
    textColor: "{colors.on-surface-strong}"
    typography: "{typography.body-md}"
    rounded: "{rounded.full}"
    padding: 8px 48px 8px 16px
---

# AV01 Design System

## Overview

AV01 describes itself as: “高品質なエロ動画を無料でストリーミング。ダウンロード不要で、いつでもどこでも視聴可能” The interface is dark, built on **Deep Blue (#111827)** with **Blue (#9CA3AF)** text and almost no color: actions are carried by contrast, not hue.

Type is set in **system-ui** and **Arimo**. Headlines run large; body text is 16px. Depth comes from soft drop shadows. Controls are pill-shaped.

Measured from [av01.media/jp](https://www.av01.media/jp) (the site sent our reader to its /jp version; av01.media was asked for) on November 6, 2026 at 1440×900 and 390×844 from 283 rendered elements. Values are computed styles from the live page, not the original source files.

## Colors

The palette has 12 roles, plus gradient stops #FF7A00, #FF3B2F, #FF4FC3, #8F3CFF.

- **Deep Blue (#111827):** Page background, seen 1 time. Token `background`.
- **Blue (#9CA3AF):** Primary text and headings, seen 101 times. Token `on-surface`.
- **White (#FFFFFF):** Headings and emphasis, seen 30 times. Token `on-surface-strong`, CSS `--tw-ring-offset-color`.
- **Cool Slate (#6B7280):** Secondary text, seen 11 times. Token `on-surface-variant`.
- **Near Black (#000000):** Raised areas one step from the page, seen 2 times. Token `surface-container-low`.
- **Near Black 60% (#00000099):** Translucent fill for cards and controls, seen 1 time. Token `overlay`.
- **Deep Blue (#1F2937):** Borders and dividers, seen 2 times. Token `outline`.
- **Dark Blue (#374151):** Secondary dividers, seen 1 time. Token `outline-variant`.
- **Blue (#9CA3AF):** Primary actions (the main text color; the palette is monochrome), seen 101 times. Token `primary`.
- **Near Black (#000000):** Text and icons on primary. Token `on-primary`.
- **Dark Cyan (#0891B2):** Accent on large areas. Token `secondary`.
- **Light Red (#F87171):** Errors and destructive states, seen 3 times. Token `error`.

## Typography

**system-ui** and **Arimo** share the interface. Fallback stack: `ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont`. Other loaded fonts: Inter.

- **headline-display:** system-ui 24px at weight 700, line height 1.33. Page title (h1).
- **body-md:** Arimo 16px at weight 400, line height 1.5. Body text.
- **body-sm:** system-ui 12px at weight 400, line height 1.33. Secondary and small text.
- **label-md:** system-ui 16px at weight 400, line height 1.5. Buttons, navigation and labels.

## Layout

Spacing follows a 4px grid: 96% of measured gaps and paddings are multiples of 4px.

- **Scale:** xs 4px, sm 8px, md 16px, lg 32px, xl 48px.
- **Gaps:** 16px is the most common gap in flex and grid layouts.
- **Breakpoints:** 576px, 599px, 640px, 768px, 980px, 1024px, 1280px, 1536px.

## Elevation & Depth

Raised elements use soft drop shadows. The most used recipes:

- `rgba(255, 80, 160, 0.45) 0px 0px 10px 0px`

## Shapes

Interactive controls are pill-shaped. Measured radii, most used first:

- **full (9999px):** 8 elements.
- **sm (4px):** 4 elements.
- **md (8px):** 4 elements.
- **lg (10px):** 4 elements.

## Components

Measured from the rendered page. Token values reference the tokens above.

- **button-primary (“ライブセックス配信”):** transparent fill, #FFFFFF text, 14px/600, 10px radius, padding 5px 12px, shadow `rgba(255, 80, 160, 0.45) 0px 0px 10px 0px`.
- **button-ghost (“🇯🇵 日本語”):** transparent fill, #FFFFFF text, 16px/400, 8px radius, padding 8px.
- **input-field (“検索...”):** #111827 fill, #FFFFFF text, 16px/400, 9999px radius, padding 8px 48px 8px 16px, border 1px solid #374151.

## Do's and Don'ts

- Do use #111827 for the page and lift surfaces in small steps: #000000.
- Do keep text in 3 levels: #9CA3AF, #FFFFFF, #6B7280.
- Do let contrast carry emphasis; primary actions use #9CA3AF on #111827.
- Do keep spacing on the 4px grid.
- Do make buttons and chips fully rounded (9999px); most other elements use 4px corners.
- Don't use #6B7280 for body text; it reaches 3.67:1 on #111827. Keep it for large text or metadata.
- Don't introduce new font families beyond system-ui and Arimo.
- Don't add saturated accent colors; the measured palette is almost entirely neutral.
- Don't make interface transitions slower than 0.3s.

## Motion

Interface transitions are quick: 0.15s, 0.3s, 0.2s. Longer ambient animations run 10s.

- **Easing:** `cubic-bezier(0.4, 0, 0.2, 1)`, `ease`, `linear`.
- **Reduced motion:** the page responds to `prefers-reduced-motion`.

Generated by [Sitepeel](https://sitepeel.dev/design-md/av01.media/), the free DESIGN.md generator (engine 2026.10.29+b828a475ee10).

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