---
version: alpha
name: Riverside
description: Dark design system extracted from riverside.com (DOM-true values, Emblematic extractor 0.2.0, 2026-11-12).
colors:
  background: "#111111"
  on-surface: "#FFFFFF"
  surface: "#1D1D1D"
  on-surface-variant: "#D2D2D2"
  primary: "#9671FF"
  outline: "#FFFFFF4D"
  white-smoke-3: "#F6F6F6"
  color-8: "#FFFFFF0D"
  color-9: "#000000"
  secondary--black-2: "#2C2C2C"
  color-11: "#B196FF8C"
  color-12: "#B196FF47"
  color-13: "#FFFFFF73"
  color-14: "#383838"
typography:
  display-lg:
    fontFamily: Sharp Grotesk
    fontSize: 60px
    fontWeight: 400
    lineHeight: 1.25
  headline-md:
    fontFamily: Sharp Grotesk
    fontSize: 50px
    fontWeight: 400
    lineHeight: 1.25
  title-md:
    fontFamily: Instrument Sans
    fontSize: 24px
    fontWeight: 500
    lineHeight: 1.25
  body-md:
    fontFamily: Instrument Sans
    fontSize: 16px
    fontWeight: 400
    lineHeight: 1.55
    letterSpacing: 0.01em
  body-sm:
    fontFamily: Instrument Sans
    fontSize: 14px
    fontWeight: 400
    lineHeight: 1.55
    letterSpacing: 0.011em
rounded:
  sm: 4px
  md: 8px
  lg: 60px
  full: 9999px
spacing:
  xxs: 4px
  xs: 6px
  sm: 7px
  md: 8px
  lg: 10px
  xl: 12px
  2xl: 16px
  3xl: 17px
  4xl: 18px
  5xl: 20px
  6xl: 23px
  7xl: 24px
  8xl: 26px
  9xl: 30px
  container: 1280px
components:
  button-primary:
    backgroundColor: "{colors.surface}"
    textColor: "{colors.on-surface}"
    rounded: "{rounded.full}"
    padding: 11px
    height: 40px
  button-secondary:
    backgroundColor: "{colors.primary}"
    textColor: "{colors.on-surface}"
    rounded: "{rounded.full}"
    padding: 0px
    height: 52px
  card:
    backgroundColor: "{colors.surface}"
    rounded: "{rounded.md}"
    padding: 34px
---

# Riverside

> Extracted from [https://riverside.com/homepage](https://riverside.com/homepage) 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

Riverside uses a dark canvas (#111111) with a palette led by #9671FF. Type is set in **Instrument Sans**, **Sharp Grotesk** (display), with 16px body text. Layout: 1280px container, top-fixed+transparent navigation, 10 sections. Built with webflow, jquery, hubspot, segment, google-tag-manager, cloudflare, cloudfront.

## 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` | `#111111` | 0.178 0 0 | bg | 59.5% | `--black-02` |
| `on-surface` | `#FFFFFF` | 1 0 0 | text | 14.2% | — |
| `surface` | `#1D1D1D` | 0.231 0 0 | surface | 6.4% | `--dark` |
| `on-surface-variant` | `#D2D2D2` | 0.864 0 0 | muted | 1.6% | `--tech-gray-text` |
| `primary` | `#9671FF` | 0.654 0.202 291.8 | accent | 0.65% | `--primary-purple` |
| `outline` | `#FFFFFF4D` (on bg `#585858`) | 1 0 0 | border | 0.02% | — |
| `white-smoke-3` | `#F6F6F6` | 0.973 0 0 | other | 10.2% | `--white-smoke-3` |
| `color-8` | `#FFFFFF0D` (on bg `#1D1D1D`) | 1 0 0 | other | 2.8% | — |
| `color-9` | `#000000` | 0 0 0 | other | 1.1% | — |
| `secondary--black-2` | `#2C2C2C` | 0.293 0 0 | other | 1.4% | `--secondary--black-2` |
| `color-11` | `#B196FF8C` (on bg `#695A94`) | 0.74 0.15 294.3 | other | 0.52% | — |
| `color-12` | `#B196FF47` (on bg `#3E3654`) | 0.74 0.15 294.3 | other | 0.52% | — |
| `color-13` | `#FFFFFF73` (on bg `#7C7C7C`) | 1 0 0 | other | 0.39% | — |
| `color-14` | `#383838` | 0.341 0 0 | other | 0.38% | — |

Contrast: text on background 18.88:1, muted text 12.49:1, accent 5.49:1.

Gradients in use: `linear-gradient(107deg, rgba(0, 0, 0, 0) 70%, rgb(17, 17, 17)), url("https://cdn.prod.website-files.com/685be7dcd32275d3830651d3/68de8d4ac9b`; `radial-gradient(closest-side, rgba(177, 150, 255, 0.55) 0%, rgba(177, 150, 255, 0.28) 45%, rgba(177, 150, 255, 0) 100%)`.

The site does not change under `prefers-color-scheme: dark`.

## Typography

| Family | Role | Weights | Share of text | Source |
|---|---|---|---|---|
| **Instrument Sans** | body | 400, 500, 600 | 57.6% | webfont |
| **Sharp Grotesk** | display | 400, 500 | 42.4% | webfont |

Declared in `@font-face` but not used to paint text on this page: Inter, IBM Plex Sans, Inter-custom-woff2, Poppins, Alfa Slab One, Shrikhand. Don't treat these as the page's fonts.

Scale (px): 8, 10, 11, 12, 14, 16, 18, 20, 24, 30, 50, 56, 60. Effective ratio ≈ 1.208 (close to a minor third). Body 16px at line-height 1.55; display 60px with tracking 0em. Headings are sentence case. On a 390px viewport the body is 16px and display 36px.

## Layout

Spacing has no reliable single base unit; the most used steps are 4, 6, 7, 8, 10, 12, 16, 17, 18, 20, 23, 24, 26, 30px. Sections open with about 124px of space before their first line of text. Content sits in a 1280px container on a 6-column grid. Text density 0.066 (text area / page area).

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

1. **nav** (64px, bg #FFFFFF)
2. **hero** (1328px, bg #FFFFFF)
3. **section** — “End to end content creation. All in one flow.” (857px, bg #111111)
4. **section** — “Made with Riverside” (654px, bg #111111)
5. **section** — “Studio-level quality. No studio required.” (1901px, bg #F6F6F6)
6. **section** — “Want to speed things up? Let AI jump in.” (4696px, bg #111111)
7. **section** — “Podcast hosting built right in” (825px, bg #111111)
8. **section** — “Run all your webinars & live events like a pro.” (2090px, bg #111111)
9. **logos** — “Built for marketers and producers” (4130px, bg #111111)
10. **footer** — “Resources” (931px, bg #F6F6F6)

## Elevation & Depth

Style: flat. Most used shadows:

- `rgba(0, 0, 0, 0.25) 0px 4px 15px 0px`

## Shapes

Dominant corner radius is a full pill; radii in use: 4px, 8px, 60px, pill. Borders: hairline (1px).

## Components

- **button-primary**: backgroundColor `#1D1D1D`, textColor `#FFFFFF`, rounded `9999px`, padding `11px 11px`, height `40px`, fontFamily `Instrument Sans`, fontSize `14px`, fontWeight `500`, border `1px solid #1D1D1D` (e.g. “Start for Free”)
- **button-secondary**: backgroundColor `#9671FF`, textColor `#FFFFFF`, rounded `9999px`, padding `0px 0px`, height `52px`, fontFamily `Instrument Sans`, fontSize `16px`, fontWeight `500`
- **card**: rounded `8px`, padding `34px`, backgroundColor `#1D1D1D`

## Do's and Don'ts

- Do reserve `#9671FF` for primary actions and highlights; it covers only 0.65% of the painted page.
- Do set body copy in Instrument Sans at 16px / 1.55.
- Do use Sharp Grotesk only for display sizes, not for body text.
- Don't introduce font weights beyond 400, 500, 600.
- Don't add drop shadows; depth comes from tone and borders.
- Do keep corners at pill for most controls, and use the larger radii only for cards and media.
- 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: `color.accent_strategy`, `layout.columns`, `layout.hero`, `layout.section_count`, `sections[].kind`, `space.base`, `space.section_padding_px`. Full per-field provenance is in `spec.json`.