---
name: inflearn-design-reference
provider: DesignSkill (https://designskill.dev)
reference: inflearn.com
source_url: https://www.inflearn.com/
tool: designskill-extract/3.2.0
extracted_at: 2026-07-27T08:10:09.091Z
mode: full-render
classification: reference_only
---

# Inflearn — Design Reference (measured)

Measured design tokens extracted from `https://www.inflearn.com/` by designskill-extract/3.2.0.
Every value below was observed in the live page (×N = observation count). Values not listed were **not observed** — do not invent them.
This document is `reference_only`: an analysis of a third-party site, not a license to its brand assets.

## Overview

- Extraction mode: **full-render** (viewports 390/768/1440px × light/dark), 1 page(s), 673 observation records.
- Primary action color observed as `#00c471` (basis: cross-validated, confidence 0.98).
- Dominant font family: **Pretendard** (×2702; secondary sans-serif ×155).
- Type scale observed at 8 sizes from 9px to 18px.
- Corner radius values in use: 8px, 4px, 32px, 100px….
- Not observed in this extraction: badges.

## Colors

### Role Tokens

Semantic roles inferred from observed usage. `basis` tells how the role was established (declared CSS var > cross-validated > inferred).

| Token | Value | Basis | Confidence | Observed |
|---|---|---|---|---|
| `{color.primary}` | `#00c471` | cross-validated | 0.98 | ×47 |
| `{color.background}` | `#e9ecef` | cross-validated | 0.94 | ×637 |
| `{color.ink}` | `#212529` | cross-validated | 0.94 | ×572 |
| `{color.muted}` | `#495057` | inferred | 0.7 | ×1271 |
| `{color.surface}` | `#ffffff` | inferred | 0.7 | ×486 |
| `{color.accent}` | `#228be6` | inferred | 0.65 | ×159 |

### Observed Palette

Full measured palette ordered by usage share. `Used in` lists the CSS properties the color appeared on.

| Hex | Share | Used in | Observed |
|---|---|---|---|
| `#495057` | 27.1% | color, custom-property | ×1271 (cross-validated, 0.95) |
| `#e9ecef` | 13.6% | border-color, background-color, color | ×637 (cross-validated, 0.94) |
| `#212529` | 12.2% | color, outline, --mantine-color-dark-light, custom-property, background-color | ×572 (cross-validated, 0.94) |
| `#ffffff` | 10.3% | background-color, color, border-color, -webkit-mask, --color-prettylights-syntax-invalid-illegal-text | ×486 (cross-validated, 0.94) |
| `#dee2e6` | 4.8% | border-color, background-color | ×227 (cross-validated, 0.93) |
| `#ced4da` | 4.8% | color, background-color, border-color, --mantine-color-gray-light | ×226 (cross-validated, 0.93) |
| `#228be6` | 3.4% | --mantine-color-blue-light, color, background-color | ×159 (cross-validated, 0.92) |
| `#868e96` | 3.3% | color | ×156 (observed, 0.77) |
| `#fa5252` | 3.0% | background-color, box-shadow, color | ×139 (cross-validated, 0.92) |
| `#101113` | 4.2% | custom-property, color, background-color, box-shadow | ×198 (cross-validated, 0.93) |
| `#e7f5ff` | 1.7% | background-color | ×79 (observed, 0.76) |
| `#1098ad` | 1.5% | color, --mantine-color-cyan-light | ×68 (cross-validated, 0.91) |
| `#bdbdbd` | 1.2% | color, background-color | ×57 (observed, 0.76) |
| `#00c471` | 1.0% | background-color, border-color, box-shadow | ×47 (cross-validated, 0.91) |
| `#00a760` | 0.9% | background-color, color | ×44 (cross-validated, 0.91) |
| `#be4bdb` | 0.9% | --mantine-color-grape-light, color | ×42 (cross-validated, 0.9) |

## Typography

### Font Families

| Family | Observed |
|---|---|
| `Pretendard` | ×2702 |
| `sans-serif` | ×155 |
| `KaTeX_Main` | ×12 |
| `KaTeX_SansSerif` | ×10 |
| `KaTeX_Fraktur` | ×6 |
| `KaTeX_Math` | ×6 |

Use **Pretendard** as the default family — it accounts for the overwhelming majority of observed text nodes.

### Type Scale

| Token | Size | Observed |
|---|---|---|
| `{type.display}` | 18px | ×52 |
| `{type.h1}` | 16px | ×577 |
| `{type.h2}` | 14px | ×875 |
| `{type.h3}` | 13px | ×187 |
| `{type.body-lg}` | 12px | ×799 |
| `{type.body}` | 11px | ×107 |
| `{type.body-sm}` | 10px | ×98 |
| `{type.caption}` | 9px | ×109 |

The most frequently observed size is **14px** (×875) — treat it as the default body size.

## Spacing

| Value | Observed |
|---|---|
| `4px` | ×1524 |
| `6px` | ×872 |
| `8px` | ×544 |
| `2px` | ×514 |
| `10px` | ×407 |
| `16px` | ×260 |
| `20px` | ×150 |
| `7px` | ×80 |
| `12px` | ×58 |
| `24px` | ×31 |
| `14px` | ×30 |
| `17px` | ×25 |

## Shape (Border Radius)

| Value | Observed |
|---|---|
| `8px` | ×1129 |
| `4px` | ×356 |
| `32px` | ×295 |
| `100px` | ×40 |
| `16px` | ×29 |
| `30px` | ×12 |
| `50px` | ×6 |

## Elevation

| Shadow | Observed |
|---|---|
| `rgba(0, 0, 0, 0.05) 0px 1px 3px 0px, rgba(0, 0, 0, 0.1) 0px 1px 2px 0px` | ×21 |
| `#000000` | ×10 |
| `var(--ag-input-focus-box-shadow)` | ×10 |
| `var(--ag-card-shadow)` | ×6 |
| `#fa5252` | ×4 |
| `#00c471` | ×3 |

## Motion

| Duration | Observed |
|---|---|
| `0.3s` | ×97 |
| `0.2s` | ×49 |
| `0.6s` | ×33 |
| `0.1s` | ×24 |
| `0.15s` | ×13 |

## Components

Measured computed styles of representative components (desktop viewport).

| Component | Measured spec | Samples |
|---|---|---|
| button.primary | bg `#25262b` · text `#ffffff` · radius `999px` · padding `10px 16px` · font `14px/700` | ×2 |
| button.outline | text `#212529` · border `1px solid rgb(233, 236, 239)` · radius `999px` · padding `10px 16px` · font `14px` | ×4 |
| form.input | bg `#ffffff` · text `#000000` · border `0px solid rgb(0, 0, 0)` · radius `8px` · padding `0px` · height `36` | ×1 |
| card | bg `#000000` · radius `8px` · border `1px solid rgb(222, 226, 230)` · padding `20px` | ×10 |
| nav | bg `#ffffff` · height `65px` · position `sticky` · link `#00a760` | — |

### Hero Gradient (observed)

```css
background-image: linear-gradient(90deg, rgb(241, 253, 239) 34.67%, rgb(255, 255, 255) 58.07%);
```

### Interaction States (observed)

| State | Property | From | To |
|---|---|---|---|
| hover | background-color | `rgba(0, 0, 0, 0)` | `rgb(248, 249, 250)` |
| hover | outline-width | `3px` | `0px` |
| hover | background-color | `rgba(0, 0, 0, 0)` | `rgb(248, 249, 250)` |
| focus | background-color | `rgba(0, 0, 0, 0)` | `rgb(248, 249, 250)` |
| focus | outline-color | `rgb(0, 167, 96)` | `rgb(33, 37, 41)` |
| focus | outline-width | `3px` | `2px` |

## Accessibility (WCAG Contrast)

| FG | BG | Ratio | AA | Source |
|---|---|---|---|---|
| `#495057` | `#ffffff` | 8.18 | pass | observed ×543 |
| `#212529` | `#ffffff` | 15.43 | pass | observed ×247 |
| `#868e96` | `#ffffff` | 3.32 | fail | observed ×77 |
| `#fa5252` | `#ffffff` | 3.28 | fail | observed ×58 |
| `#ced4da` | `#303740` | 8.05 | pass | observed ×53 |
| `#101113` | `#ffffff` | 18.89 | pass | observed ×44 |
| `#228be6` | `#e7f5ff` | 3.2 | fail | observed ×35 |
| `#ffffff` | `#228be6` | 3.56 | fail | observed ×30 |
| `#000000` | `#ffffff` | 21 | pass | observed ×24 |
| `#be4bdb` | `#ffffff` | 4.02 | fail | observed ×20 |
| `#1098ad` | `#ffffff` | 3.43 | fail | observed ×20 |
| `#bdbdbd` | `#303740` | 6.4 | pass | observed ×18 |
| `#212529` | `#e9ecef` | 13.01 | pass | ink_on_background |
| `#ffffff` | `#00c471` | 2.3 | fail | white_on_primary |
| `#495057` | `#e9ecef` | 6.9 | pass | muted_on_background |

7 measured pair(s) fail AA — if you reuse those pairs, adjust lightness until the ratio reaches 4.5:1.

## Usage Rules

### Do
- Use `{color.primary}` (`#00c471`) for primary actions only — that is where it was observed.
- Default text pairing: `{color.ink}` (`#212529`) on `{color.background}` (`#e9ecef`).
- Set all text in `Pretendard` (fallbacks only for glyph coverage).
- Pick corner radii from the measured set (8px, 4px, 32px, 100px) — no intermediate values were observed.
- Cite this file's token names (`{color.*}`, `{type.*}`) when generating UI so output stays traceable to observations.

### Don't
- Don't invent colors, sizes, shadows, or spacing not listed above — absence means *not observed*, and this document records observations only.
- Don't assume the missing blocks (badges) don't exist on the site — they were simply not captured in this run.
- Don't copy brand assets (logo, wordmark, imagery, copy) — `reference_only` covers measured style values, not brand identity.

## Provenance

- Source: https://www.inflearn.com/ (1 page(s))
- Tool: designskill-extract/3.2.0 · extracted 2026-07-27T08:10:09.091Z
- Mode: full-render — 풀렌더 모드 — 3뷰포트 × 라이트/다크 computed style + 상태 관측.
- Blocks observed: 00, 01, 02, 03, 04, 05, 06, 07, 09, 10, 11, 12 · missing: badges

---

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