# Heroku design system

> Heroku design system measured from heroku.com: Avant Garde font, #0176D3 primary on #FFFFFF, 14 color hex codes, type scale, spacing and a free DESIGN.md.

Canonical page: https://sitepeel.dev/design-md/heroku.com/

Heroku’s website (heroku.com) uses the Avant Garde font and #0176D3 as its main color on a white background. Measured by Sitepeel on November 4, 2026.

## What font does Heroku use?

Heroku uses Avant Garde (weight 600) and Salesforce Sans (weights 400 and 700) on heroku.com. Page titles are 40px at weight 600 (30px on phones) and body text is 16px. Measured on November 4, 2026.

- Avant Garde (weights 600)
- Salesforce Sans (weights 400, 700)
- BentonSans (weights 400)

## Heroku colors: palette and hex codes

Heroku’s main colors are #FFFFFF (white) for the background, #181818 (charcoal) for text and #0176D3 (blue) as the main accent, with #300B60 (deep violet) and #5A1BA9 (violet) as other accents. Measured on November 4, 2026.

- #FFFFFF: white
- #181818: charcoal
- #240643: deep violet
- #333D47: dark blue
- #A998BF: violet
- #F9F9FB: snow
- #EEF1F6: cool mist
- #DDDDDD: silver

## What is Heroku built with?

Heroku’s website (heroku.com) is built with Elementor, WordPress, jQuery, jQuery UI and Masonry. Measured on November 4, 2026.

- Site builder & CMS: Elementor 4.3.5, WordPress
- JavaScript framework: jQuery 3.7.1, jQuery UI 1.14.2
- UI & CSS: Masonry, Swiper
- Server: Nginx
- Analytics: Parse.ly, Google Analytics, Google Tag Manager, LinkedIn Insight Tag
- Marketing & support: OneTrust 202604.1.0

## Questions and answers

### What font does Heroku use?

Heroku’s website uses Avant Garde (weight 600) and Salesforce Sans (weights 400 and 700). Page titles are 40px at weight 600 (30px on phones) and body text is 16px. Measured on November 4, 2026.

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

On heroku.com: #FFFFFF (white) for the background, #181818 (charcoal) for text and #0176D3 (blue) as the main accent, with #300B60 (deep violet) and #5A1BA9 (violet) as other accents. The color palette above lists all 14 colors with their hex codes and where each one is used.

### What is the Heroku design system?

The design system on this page is heroku.com’s, as measured on November 4, 2026: Avant Garde type, #0176D3 as the main color and 4px corners, written down as a DESIGN.md. It is not Heroku’s own documentation.

### What is Heroku built with?

Heroku’s website (heroku.com) is built with Elementor, WordPress, jQuery, jQuery UI and Masonry. The full tech stack Sitepeel found: Elementor, jQuery, jQuery UI, Masonry, Swiper, Nginx, WordPress, Parse.ly, Google Analytics and Google Tag Manager. Measured on November 4, 2026.

### What is the Heroku DESIGN.md?

A plain-text file with Heroku’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 Heroku’s official design system?

No. Sitepeel measured it from heroku.com’s public page on November 4, 2026. It is an independent analysis, not made or approved by Heroku.

### Can I use Heroku’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 Heroku’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/heroku.com/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 Heroku.

## The DESIGN.md file

```markdown
---
version: alpha
name: Heroku
description: "Light interface measured from heroku.com: Avant Garde type with Salesforce Sans, blue accents, tonal surfaces and 4px corners."
colors:
  background: "#FFFFFF"
  surface: "#FFFFFF"
  on-surface: "#181818"
  on-background: "#181818"
  on-surface-variant: "#240643"
  on-surface-muted: "#333D47"
  on-surface-subtle: "#A998BF"
  surface-container-low: "#F9F9FB"
  surface-container: "#EEF1F6"
  overlay: "#FFFFFF99"
  outline: "#DDDDDD"
  outline-variant: "#79589F80"
  primary: "#0176D3"
  on-primary: "#FFFFFF"
  secondary: "#300B60"
  tertiary: "#5A1BA9"
typography:
  headline-display:
    fontFamily: Avant Garde
    fontSize: 40px
    fontWeight: 600
    lineHeight: 1.2
  headline-lg:
    fontFamily: Avant Garde
    fontSize: 32px
    fontWeight: 600
    lineHeight: 1.25
  headline-md:
    fontFamily: Salesforce Sans
    fontSize: 25px
    fontWeight: 400
    lineHeight: 1
  headline-sm:
    fontFamily: Avant Garde
    fontSize: 24px
    fontWeight: 600
    lineHeight: 1.33
  title-lg:
    fontFamily: Salesforce Sans
    fontSize: 20px
    fontWeight: 700
    lineHeight: 1.4
  body-md:
    fontFamily: Salesforce Sans
    fontSize: 16px
    fontWeight: 400
    lineHeight: 1.6
  body-lg:
    fontFamily: Salesforce Sans
    fontSize: 18px
    fontWeight: 700
    lineHeight: 1.28
  body-sm:
    fontFamily: BentonSans
    fontSize: 15px
    fontWeight: 400
    lineHeight: 1.33
  caption:
    fontFamily: BentonSans
    fontSize: 14px
    fontWeight: 400
    lineHeight: 1.6
  label-lg:
    fontFamily: Salesforce Sans
    fontSize: 16px
    fontWeight: 700
    lineHeight: 1.5
    letterSpacing: -0.002em
  label-md:
    fontFamily: Salesforce Sans
    fontSize: 15px
    fontWeight: 700
    lineHeight: 1
  label-sm:
    fontFamily: Salesforce Sans
    fontSize: 12px
    fontWeight: 700
    lineHeight: 1.5
    letterSpacing: 0.05em
  headline-display-mobile:
    fontFamily: Avant Garde
    fontSize: 30px
    fontWeight: 600
    lineHeight: 1.3
rounded:
  md: 4px
spacing:
  xs: 2px
  sm: 5px
  md: 10px
  lg: 30px
  xl: 35px
  gutter: 30px
components:
  button-primary:
    backgroundColor: "{colors.primary}"
    textColor: "{colors.on-primary}"
    typography: "{typography.label-lg}"
    rounded: "{rounded.md}"
    padding: 12px 32px
    height: 52px
  button-primary-hover:
    backgroundColor: "#0B5CAB"
  button-ghost:
    textColor: "{colors.on-primary}"
    typography: "{typography.caption}"
    rounded: 3px
    padding: 11px 16px
  link:
    textColor: "{colors.on-surface-variant}"
---

# Heroku Design System

## Overview

Heroku describes itself as: “Experience fully managed app hosting that just works. Build, deploy, and scale on the battle-tested platform that defines the industry.” The interface is light, built on **White (#FFFFFF)** with **Charcoal (#181818)** text, and **Blue (#0176D3)** as the main accent.

Type is set in **Avant Garde** and **Salesforce Sans**. Headlines run large; body text is 16px. The surface language is flat. Corners are mostly 4px.

Measured from [heroku.com](https://www.heroku.com/) on November 4, 2026 at 1440×900 and 390×844 from 357 rendered elements. Values are computed styles from the live page, not the original source files.

## Colors

The palette has 14 roles, plus gradient stops #300B60, #5A1BA9.

- **White (#FFFFFF):** Page background, seen 8 times. Token `background`.
- **Charcoal (#181818):** Primary text and headings, seen 39 times. Token `on-surface`.
- **Deep Violet (#240643):** Secondary text, seen 25 times. Token `on-surface-variant`.
- **Dark Blue (#333D47):** Muted text and metadata, seen 3 times. Token `on-surface-muted`.
- **Violet (#A998BF):** Subtle text and placeholders, seen 25 times. Token `on-surface-subtle`.
- **Snow (#F9F9FB):** Raised areas one step from the page, seen 2 times. Token `surface-container-low`.
- **Cool Mist (#EEF1F6):** Cards and panels, seen 1 time. Token `surface-container`.
- **White 60% (#FFFFFF99):** Translucent fill for cards and controls, seen 4 times. Token `overlay`.
- **Silver (#DDDDDD):** Borders and dividers, seen 9 times. Token `outline`.
- **Violet 50% (#79589F80):** Secondary dividers, seen 7 times. Token `outline-variant`.
- **Blue (#0176D3):** Primary buttons and calls to action, seen 62 times. Token `primary`.
- **White (#FFFFFF):** Text and icons on primary. Token `on-primary`.
- **Deep Violet (#300B60):** Accent in logos and imagery, seen 35 times. Token `secondary`.
- **Violet (#5A1BA9):** Accent in logos and imagery, seen 8 times. Token `tertiary`.

## Typography

**Avant Garde**, **Salesforce Sans** and **BentonSans** share the interface. Fallback stack: `Avant Garde, Arial, Helvetica, sans-serif`.

- **headline-display:** Avant Garde 40px at weight 600, line height 1.2 (30px on mobile). Page title (h1).
- **headline-lg:** Avant Garde 32px at weight 600, line height 1.25. Section headings (h2).
- **headline-md:** Salesforce Sans 25px at weight 400, line height 1. Sub-section headings.
- **headline-sm:** Avant Garde 24px at weight 600, line height 1.33. Card and feature titles.
- **title-lg:** Salesforce Sans 20px at weight 700, line height 1.4. Small titles.
- **body-md:** Salesforce Sans 16px at weight 400, line height 1.6. Body text.
- **body-lg:** Salesforce Sans 18px at weight 700, line height 1.28. Lead paragraphs.
- **body-sm:** BentonSans 15px at weight 400, line height 1.33. Secondary and small text.
- **caption:** BentonSans 14px at weight 400, line height 1.6. Captions and fine print.
- **label-lg:** Salesforce Sans 16px at weight 700, line height 1.5, tracking -0.002em. Large buttons and tabs.
- **label-md:** Salesforce Sans 15px at weight 700, line height 1. Buttons, navigation and labels.
- **label-sm:** Salesforce Sans 12px at weight 700, line height 1.5, tracking 0.05em, uppercase. Small labels and badges.

## Layout

Spacing does not follow a strict grid: 17% of measured values are multiples of 4px, so match the measured steps rather than rounding to a grid.

- **Scale:** xs 2px, sm 5px, md 10px, lg 30px, xl 35px.
- **Gaps:** 30px is the most common gap in flex and grid layouts.
- **Breakpoints:** 479px, 480px, 600px, 767px, 768px, 800px, 900px, 960px, 1024px, 1025px.

## Elevation & Depth

The design is flat: no shadows were measured. Hierarchy comes from tonal surface steps (#F9F9FB → #EEF1F6) and #DDDDDD borders.

## Shapes

Most elements use 4px corners. Measured radii, most used first:

- **md (4px):** 120 elements.

## Components

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

- **button-primary (“Get Started Now”):** #0176D3 fill, #FFFFFF text, 16px/700, 4px radius, padding 12px 32px, border 2px solid #0176D3.
- **button-primary-hover:** background #0B5CAB, text #FFFFFF on hover.
- **button-ghost (“Search Open Search Popup”):** transparent fill, #FFFFFF text, 14px/400, 3px radius, padding 11px 16px.
- **link:** transparent fill, #240643 text, padding 0px.

## Do's and Don'ts

- Do use #FFFFFF for the page and lift surfaces in small steps: #F9F9FB, #EEF1F6.
- Do keep text in 4 levels: #181818, #240643, #333D47, #A998BF.
- Do reserve #0176D3 for primary actions and key highlights.
- Do reuse the measured spacing steps (5px, 10px, 30px).
- Do use 4px corners on most elements.
- Don't use #A998BF for body text; it reaches 2.65:1 on #FFFFFF. Keep it for large text or metadata.
- Don't add drop shadows for depth; use tonal surfaces.
- Don't introduce new font families beyond Avant Garde, Salesforce Sans and BentonSans.
- Don't use #0176D3 for large backgrounds or body text.
- Don't make interface transitions slower than 0.4s.

## Motion

Interface transitions are quick: 0.3s, 0.4s, 0.1s.

- **Easing:** `ease`, `ease-in-out`.
- **Reduced motion:** the page responds to `prefers-reduced-motion`.

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

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