# Firebase design system

> Firebase design system measured from firebase.google.com: Google Sans font, #F57C00 primary, 9 color hex codes, type scale, spacing and a free DESIGN.md.

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

Firebase’s website (firebase.google.com) uses the Google Sans font and #F57C00 as its main color on a #1E1E1E background. Measured by Sitepeel on November 4, 2026.

## What font does Firebase use?

Firebase uses Google Sans (weights 400, 500 and 700) and Material Icons (weight 400), with JetBrains Mono for code on firebase.google.com. Page titles are 75px at weight 700 (45px on phones) and body text is 16px. Measured on November 4, 2026.

- Google Sans (weights 400, 500, 700)
- Material Icons (weights 400)
- JetBrains Mono (weights 400)

## Firebase colors: palette and hex codes

Firebase’s main colors are #1E1E1E (charcoal) for the background, #FFFFFF (white) for text and #F57C00 (vivid orange) as the main accent, with #FF9100 (vivid orange) and #1765CC (blue) as other accents. Measured on November 4, 2026.

- #1E1E1E: charcoal
- #FFFFFF: white
- #323232: graphite
- #F57C00: vivid orange
- #000000: near black
- #FF9100: vivid orange
- #1765CC: blue

## What is Firebase built with?

Firebase’s website (firebase.google.com) is built with Lit, Google Cloud, Material Symbols and Google Fonts. Measured on November 4, 2026.

- JavaScript framework: Lit 4.2.2
- Hosting & CDN: Google Cloud
- Fonts & icons: Material Symbols, Google Fonts
- Analytics: Google Analytics, Google Tag Manager

## Questions and answers

### What font does Firebase use?

Firebase’s website uses Google Sans (weights 400, 500 and 700) and Material Icons (weight 400), with JetBrains Mono for code. Page titles are 75px at weight 700 (45px on phones) and body text is 16px. Measured on November 4, 2026.

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

On firebase.google.com: #1E1E1E (charcoal) for the background, #FFFFFF (white) for text and #F57C00 (vivid orange) as the main accent, with #FF9100 (vivid orange) and #1765CC (blue) as other accents. The color palette above lists all 9 colors with their hex codes and where each one is used.

### What is the Firebase design system?

The design system on this page is firebase.google.com’s, as measured on November 4, 2026: Google Sans type, #F57C00 as the main color and 100px corners, written down as a DESIGN.md. It is not Firebase’s own documentation.

### What is Firebase built with?

Firebase’s website (firebase.google.com) is built with Lit, Google Cloud, Material Symbols and Google Fonts. The full tech stack Sitepeel found: Lit, Google Cloud, Material Symbols, Google Fonts, Google Analytics and Google Tag Manager. Measured on November 4, 2026.

### What is the Firebase DESIGN.md?

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

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

### Can I use Firebase’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 Firebase’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/firebase.google.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 Firebase.

## The DESIGN.md file

```markdown
---
version: alpha
name: Firebase
description: "Dark interface measured from firebase.google.com: Google Sans type with Material Icons, vivid orange accents, flat surfaces and 100px corners."
colors:
  background: "#1E1E1E"
  surface: "#1E1E1E"
  on-surface: "#FFFFFF"
  on-background: "#FFFFFF"
  overlay: "#FFFFFF99"
  outline: "#323232"
  outline-variant: "#041E4933"
  primary: "#F57C00"
  on-primary: "#000000"
  secondary: "#FF9100"
  tertiary: "#1765CC"
typography:
  headline-display:
    fontFamily: Google Sans
    fontSize: 75px
    fontWeight: 700
    lineHeight: 1.33
  headline-lg:
    fontFamily: Google Sans
    fontSize: 35px
    fontWeight: 700
    lineHeight: 1.29
  body-md:
    fontFamily: Google Sans
    fontSize: 16px
    fontWeight: 400
    lineHeight: 1.5
  body-lg:
    fontFamily: Google Sans
    fontSize: 18px
    fontWeight: 700
    lineHeight: 1.33
  body-sm:
    fontFamily: Google Sans
    fontSize: 14px
    fontWeight: 400
    lineHeight: 1.14
  caption:
    fontFamily: Google Sans
    fontSize: 12px
    fontWeight: 400
    lineHeight: 1.3
  label-lg:
    fontFamily: Material Icons
    fontSize: 24px
    fontWeight: 400
    lineHeight: 1
  label-md:
    fontFamily: Google Sans
    fontSize: 16px
    fontWeight: 500
    lineHeight: 1.5
  label-sm:
    fontFamily: Google Sans
    fontSize: 14px
    fontWeight: 500
    lineHeight: 1.43
  code:
    fontFamily: JetBrains Mono
    fontSize: 20px
    fontWeight: 400
    lineHeight: 1.2
  headline-display-mobile:
    fontFamily: Google Sans
    fontSize: 45px
    fontWeight: 700
    lineHeight: 1.44
  headline-lg-mobile:
    fontFamily: Google Sans
    fontSize: 20px
    fontWeight: 700
    lineHeight: 1.5
rounded:
  sm: 4px
  md: 8px
  lg: 20px
  xl: 100px
spacing:
  xs: 4px
  sm: 8px
  md: 12px
  lg: 20px
  xl: 40px
  gutter: 16px
components:
  button-primary:
    backgroundColor: "{colors.primary}"
    textColor: "{colors.on-primary}"
    typography: "{typography.body-lg}"
    rounded: "{rounded.xl}"
    padding: 10px 20px
    height: 42px
  button-primary-hover:
    backgroundColor: "#FFA000"
  button-outline:
    textColor: "{colors.on-surface}"
    typography: "{typography.body-lg}"
    rounded: "{rounded.xl}"
    padding: 5px 20px
    height: 38px
  button-outline-hover:
    backgroundColor: "{colors.secondary}"
    textColor: "{colors.on-primary}"
  button-ghost:
    textColor: "{colors.on-primary}"
    typography: "{typography.body-lg}"
    rounded: "{rounded.xl}"
    padding: 5px 20px
    height: 36px
  input-field:
    backgroundColor: "#F1F3F4"
    textColor: "#00000099"
    typography: "{typography.body-md}"
    rounded: 0px
    padding: 8px 8px 8px 40px
  card:
    backgroundColor: "{colors.overlay}"
    textColor: "{colors.on-primary}"
    rounded: "{rounded.lg}"
    padding: 32px
  link:
    textColor: "{colors.on-primary}"
---

# Firebase Design System

## Overview

Firebase describes itself as: “Discover Firebase, Google’s mobile and web app development platform that helps developers build apps and games that users will love.” The interface is dark, built on **Charcoal (#1E1E1E)** with **White (#FFFFFF)** text, and **Vivid Orange (#F57C00)** as the main accent.

Type is set in **Google Sans** and **Material Icons**, with **JetBrains Mono** for code. Headlines run large; body text is 16px. Depth comes from soft drop shadows. Corners are mostly 100px.

Measured from [firebase.google.com](https://firebase.google.com/) on November 4, 2026 at 1440×900 and 390×844 from 267 rendered elements. Values are computed styles from the live page, not the original source files.

## Colors

The palette has 9 roles.

- **Charcoal (#1E1E1E):** Page background. Token `background`.
- **White (#FFFFFF):** Primary text and headings, seen 20 times. Token `on-surface`, CSS `--tenant-background-1`.
- **White 60% (#FFFFFF99):** Translucent fill for cards and controls, seen 2 times. Token `overlay`.
- **Graphite (#323232):** Borders and dividers, seen 4 times. Token `outline`.
- **Deep Blue 20% (#041E4933):** Secondary dividers, seen 1 time. Token `outline-variant`.
- **Vivid Orange (#F57C00):** Primary buttons and calls to action, seen 1 time. Token `primary`.
- **Near Black (#000000):** Text and icons on primary. Token `on-primary`.
- **Vivid Orange (#FF9100):** Accent in text, fills and borders, seen 11 times. Token `secondary`, CSS `--firebase-cta-orange`.
- **Blue (#1765CC):** Accent (CSS variable). Token `tertiary`.

## Typography

**Google Sans**, **Material Icons** and **JetBrains Mono** (monospace) share the interface. Fallback stack: `Google Sans, sans-serif`.

- **headline-display:** Google Sans 75px at weight 700, line height 1.33 (45px on mobile). Page title (h1).
- **headline-lg:** Google Sans 35px at weight 700, line height 1.29 (20px on mobile). Section headings (h2).
- **body-md:** Google Sans 16px at weight 400, line height 1.5. Body text.
- **body-lg:** Google Sans 18px at weight 700, line height 1.33. Lead paragraphs.
- **body-sm:** Google Sans 14px at weight 400, line height 1.14. Secondary and small text.
- **caption:** Google Sans 12px at weight 400, line height 1.3. Captions and fine print.
- **label-lg:** Material Icons 24px at weight 400, line height 1. Large buttons and tabs.
- **label-md:** Google Sans 16px at weight 500, line height 1.5. Buttons, navigation and labels.
- **label-sm:** Google Sans 14px at weight 500, line height 1.43. Small labels and badges.
- **code:** JetBrains Mono 20px at weight 400, line height 1.2. Code and technical values.

## Layout

Spacing does not follow a strict grid: 63% of measured values are multiples of 4px, so match the measured steps rather than rounding to a grid.

- **Scale:** xs 4px, sm 8px, md 12px, lg 20px, xl 40px.
- **Gaps:** 16px is the most common gap in flex and grid layouts.
- **Breakpoints:** 400px, 420px, 600px, 700px, 720px, 800px, 920px, 1000px, 1200px, 1280px, 1440px, 2000px, 2400px, 3200px.

## Elevation & Depth

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

- `rgba(0, 0, 0, 0.15) 0px 4px 12px 0px`

## Shapes

Most elements use 100px corners. Measured radii, most used first:

- **xl (100px):** 40 elements.
- **sm (4px):** 36 elements.
- **lg (20px):** 20 elements.
- **md (8px):** 12 elements.

## Components

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

- **button-primary (“Get Started”):** #F57C00 fill, #000000 text, 18px/700, 100px radius, padding 10px 20px.
- **button-primary-hover:** background #FFA000, text #000000 on hover.
- **button-outline (“Get started in console”):** transparent fill, #FFFFFF text, 18px/700, 100px radius, padding 5px 20px, border 2px solid #FF9100.
- **button-outline-hover:** background #FF9100, text #000000 on hover.
- **button-ghost (“View generative AI options”):** transparent fill, #000000 text, 18px/700, 100px radius, padding 5px 20px, border 2px solid #FF9100.
- **input-field (“Search”):** #F1F3F4 fill, #00000099 text, 16px/400, padding 8px 8px 8px 40px.
- **card:** #FFFFFF99 fill, #000000 text, 22px/400, 20px radius, padding 32px, shadow `rgba(0, 0, 0, 0.15) 0px 4px 12px 0px`.
- **link:** transparent fill, #000000 text, padding 0px.

## Do's and Don'ts

- Do use #1E1E1E for the page.
- Do reserve #F57C00 for primary actions and key highlights.
- Do reuse the measured spacing steps (8px, 12px, 20px).
- Do use 100px corners on most elements; larger surfaces also use 4px, 20px and 8px.
- Don't introduce new font families beyond Google Sans, Material Icons and JetBrains Mono.
- Don't use #F57C00 for large backgrounds or body text.
- Don't make interface transitions slower than 0.25s.

## Motion

Interface transitions are quick: 0.2s, 0.25s, 0.1s.

- **Easing:** `ease`, `cubic-bezier(0, 0, 0.2, 1)`.

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

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