---
version: alpha
name: Perplexity
description: Light design system extracted from www.perplexity.ai (DOM-true values, Emblematic extractor 0.2.0, 2026-11-12).
colors:
  background: "#FBFBFB"
  on-surface: "#0B2833"
  on-surface-variant: "#0B2833BF"
  surface: "#1C1C1C12"
  primary: "#252525"
  outline: "#0B283326"
  color-7: "#0B283380"
  color-8: "#0F363912"
  color-9: "#3D95951A"
  on-primary: "#FBFBFB"
  background-dark: "#15171B"
  on-surface-dark: "#DBDEE3"
  on-surface-variant-dark: "#DBDEE3A6"
  surface-dark: "#1B1D21"
  primary-dark: "#DBDEE3"
typography:
  display-lg:
    fontFamily: Pplx Sans
    fontSize: 26px
    fontWeight: 400
    lineHeight: 1.5
    letterSpacing: -0.005em
  body-md:
    fontFamily: Pplx Sans
    fontSize: 12px
    fontWeight: 400
    lineHeight: 1.375
rounded:
  sm: 8px
  md: 12px
  lg: 20px
  full: 9999px
spacing:
  xxs: 2px
  xs: 4px
  sm: 6px
  md: 8px
  lg: 10px
  xl: 12px
  2xl: 13.5px
  3xl: 16px
  4xl: 32px
  base: 4px
components:
  button-primary:
    backgroundColor: "{colors.primary}"
    textColor: "{colors.background}"
    rounded: "{rounded.sm}"
    padding: 0px
    height: 40px
  button-secondary:
    textColor: "{colors.on-surface}"
    rounded: "{rounded.full}"
    padding: 0px
    height: 24px
  input:
    backgroundColor: "#FFFFFF"
    rounded: "{rounded.sm}"
    padding: 8px
    height: 38px
---

# Perplexity

> Extracted from [https://www.perplexity.ai/](https://www.perplexity.ai/) on 2026-11-12 by Emblematic. Every value below was read from the rendered DOM (computed styles, `document.fonts`, and the fonts Chrome actually used to paint text), not estimated from pixels. When the YAML front matter and this prose disagree, the YAML wins. Copy values from this file exactly; don't transcribe them from memory. Don't copy logos, imagery, illustrations or marketing copy.

## Overview

Perplexity uses a light canvas (#FBFBFB) with a monochrome palette led by #252525. Type is set in **Pplx Sans**, with 12px body text. Layout: fluid container, side navigation, 1 sections. Built with react, tailwind, radix-ui, cloudflare.

## Colors

Area-weighted from painted backgrounds, text and borders on the 1440px light capture. Roles are inferred from usage (largest background, most text, interactive fills). Every hex is an exact computed value; a role marked *unverified* is a best guess that has not passed review, so its canonical token (e.g. `primary`) is left out of the front matter.

| Token | Hex | OKLCH | Role | Share of paint | CSS variable |
|---|---|---|---|---|---|
| `background` | `#FBFBFB` | 0.988 0 0 | bg | 92.5% | `--bg-base` |
| `on-surface` | `#0B2833` | 0.261 0.04 226.5 | text | 2.2% | `--fg-primary` |
| `on-surface-variant` | `#0B2833BF` (on bg `#475D65`) | 0.261 0.04 226.5 | muted | 1.9% | — |
| `surface` | `#1C1C1C12` (on bg `#EBEBEB`) | 0.226 0 0 | surface | 1.0% | — |
| `primary` | `#252525` | 0.264 0 0 | accent | 0.68% | `--action-solid-neutral-bg-idle` |
| `outline` | `#0B283326` (on bg `#D7DBDD`) | 0.261 0.04 226.5 | border | 0.24% | — |
| `color-7` | `#0B283380` (on bg `#839297`) | 0.261 0.04 226.5 | other | 0.52% | — |
| `color-8` | `#0F363912` (on bg `#EAEDED`) | 0.307 0.043 202.3 | other | 0.29% | — |
| `color-9` | `#3D95951A` (on bg `#E8F1F1`) | 0.617 0.083 195.2 | other | 0.44% | — |

Declared brand/accent tokens: `--accent-bg-strong` = `#016A71`, `--action-solid-accent-bg-idle` = `#016A71`.

Contrast: text on background 14.86:1, muted text 6.74:1, accent 14.81:1.

Gradients in use: `linear-gradient(rgb(251, 251, 251), rgba(0, 0, 0, 0))`; `radial-gradient(110.21% 173.1% at 0% -79.81%, rgba(61, 149, 149, 0.1) 0%, rgba(61, 149, 149, 0) 100%), none`.

The site responds to `prefers-color-scheme: dark`; the `-dark` tokens hold the dark-mode roles.

## Typography

| Family | Role | Weights | Share of text | Source |
|---|---|---|---|---|
| **Pplx Sans** (CSS: `pplxSans`) | body | 400, 500 | 100.0% | webfont |

Declared in `@font-face` but not used to paint text on this page: KaTeX Main, KaTeX SansSerif, KaTeX Fraktur, KaTeX Math, KaTeX Size1, KaTeX Caligraphic. Don't treat these as the page's fonts.

Scale (px): 11, 12, 14, 16, 26. Effective ratio ≈ 1.294 (close to a perfect fourth). Body 12px at line-height 1.333; display 26px with tracking -0.005em. Headings are mixed case. On a 390px viewport the body is 16px and display 26px.

## Layout

Spacing follows a 4px base unit; the most used steps are 2, 4, 6, 8, 10, 12, 13.5, 16, 32px. Content sits in a fluid container on a 2-column grid. Text density 0.058 (text area / page area).

Section order (desktop). Kinds below the review threshold are shown as *section*:

1. **hero** — “What do you want to know?” (900px, bg #FBFBFB)

## Elevation & Depth

Style: subtle. Most used shadows:

- `color(srgb 0.0431373 0.156863 0.2 / 0.07) 0px 0px 2px 0px inset`
- `color(srgb 0.0431373 0.156863 0.2 / 0.02) 0px 1px 0px 0px, color(srgb 0.0431373 0.156863 0.2 / 0.14) 0px 2px 6px -2px, color(srgb 0.0431373 0.156863 0.2 / 0.1) 0px 6px 20px -5px`

## Shapes

Dominant corner radius 8px; radii in use: 8px, 12px, 20px, pill. Borders: hairline (1px).

## Components

- **button-primary**: backgroundColor `#252525`, textColor `#FBFBFB`, rounded `8px`, padding `0px 16px`, height `40px`, fontFamily `Pplx Sans`, fontSize `16px`, fontWeight `500` (e.g. “Continue with Google”)
- **button-secondary**: textColor `#0B2833`, rounded `9999px`, padding `0px 8px`, height `24px`, fontFamily `Pplx Sans`, fontSize `12px`, fontWeight `500`, border `1px solid #0B283326` (e.g. “View plans”)
- **input**: rounded `8px`, height `38px`, padding `8px 16px`, backgroundColor `#FFFFFF`, border `1px solid #0B283326`

## Do's and Don'ts

- Do reserve `#252525` for primary actions and highlights; it covers only 0.68% of the painted page.
- Do keep the palette monochrome; there is no chromatic brand accent on the page.
- Do set body copy in Pplx Sans at 12px / 1.333.
- Do tighten large headlines (-0.005em at 26px).
- Don't introduce font weights beyond 400, 500.
- Do keep corners at 8px for most controls, and use the larger radii only for cards and media.
- Do snap spacing to multiples of 4px.
- Don't copy this site's logos, illustrations, photography or copy; use the system, not the brand assets.

## Provenance

Spec v2, extractor 0.2.0. Render quality: **ok**. Vision pass: not run. Fields below confidence 0.7 are hedged or left out above: `imagery.dominant_colors`, `layout.columns`, `layout.hero`, `layout.section_count`, `space.section_padding_px`. Full per-field provenance is in `spec.json`.