# Bubble design system

> Bubble design system measured from bubble.io: Manrope font, #0C29AB primary on #FFFFFF, 10 color hex codes, type scale, spacing and a free DESIGN.md.

Canonical page: https://sitepeel.dev/design-md/bubble.io/

Bubble’s website (bubble.io) uses the Manrope font and #0C29AB as its main color on a white background. Measured by Sitepeel on November 4, 2026.

## What font does Bubble use?

Bubble uses Manrope (weights 400, 600, 700 and 800) and Open Sans (weight 600) on bubble.io. Page titles are 51px at weight 800 and body text is 14px. Measured on November 4, 2026.

- Manrope (weights 400, 600, 700, 800)
- Open Sans (weights 600)

## Bubble colors: palette and hex codes

Bubble’s main colors are #FFFFFF (white) for the background, #1A1A1A (charcoal) for text and #0C29AB (dark indigo) as the main accent, with #FED39C (light orange) and #DBA5DE (light purple) as other accents. Measured on November 4, 2026.

- #FFFFFF: white
- #1A1A1A: charcoal
- #525252: slate
- #F5FAFF: cool snow
- #E4EAF1: cool mist
- #AFC0D4: light blue
- #0C29AB: dark indigo
- #FED39C: light orange

## What is Bubble built with?

Bubble’s website (bubble.io) is built with Bubble, jQuery, Lit, Cloudflare and AOS. Measured on November 4, 2026.

- Hosting & CDN: Cloudflare
- Site builder & CMS: Bubble
- JavaScript framework: jQuery 3.6.4, Lit 3.1.2
- Animation & 3D: AOS, GSAP 3.12.2, Lottie
- Analytics: Meta Pixel 2.9.435, Segment 1.84.3, TikTok Pixel, Microsoft Advertising
- Server: Express

## Questions and answers

### What font does Bubble use?

Bubble’s website uses Manrope (weights 400, 600, 700 and 800) and Open Sans (weight 600). Page titles are 51px at weight 800 and body text is 14px. Measured on November 4, 2026.

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

On bubble.io: #FFFFFF (white) for the background, #1A1A1A (charcoal) for text and #0C29AB (dark indigo) as the main accent, with #FED39C (light orange) and #DBA5DE (light purple) as other accents. The color palette above lists all 10 colors with their hex codes and where each one is used.

### What is the Bubble design system?

The design system on this page is bubble.io’s, as measured on November 4, 2026: Manrope type, #0C29AB as the main color and 4px corners, written down as a DESIGN.md. It is not Bubble’s own documentation.

### What is Bubble built with?

Bubble’s website (bubble.io) is built with Bubble, jQuery, Lit, Cloudflare and AOS. The full tech stack Sitepeel found: Cloudflare, Bubble, jQuery, Lit, AOS, GSAP, Lottie, Meta Pixel, Segment and TikTok Pixel. Measured on November 4, 2026.

### What is the Bubble DESIGN.md?

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

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

### Can I use Bubble’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 Bubble’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/bubble.io/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 Bubble.

## The DESIGN.md file

```markdown
---
version: alpha
name: Bubble
description: "Light interface measured from bubble.io: Manrope type with Open Sans, dark indigo accents, tonal surfaces and 4px corners."
colors:
  background: "#FFFFFF"
  surface: "#FFFFFF"
  on-surface: "#1A1A1A"
  on-background: "#1A1A1A"
  on-surface-variant: "#525252"
  surface-container-low: "#F5FAFF"
  outline: "#E4EAF1"
  outline-variant: "#AFC0D4"
  primary: "#0C29AB"
  on-primary: "#FFFFFF"
  secondary: "#FED39C"
  tertiary: "#DBA5DE"
typography:
  headline-display:
    fontFamily: Manrope
    fontSize: 51px
    fontWeight: 800
    lineHeight: 1.2
    letterSpacing: -0.02em
  headline-lg:
    fontFamily: Manrope
    fontSize: 40px
    fontWeight: 800
    lineHeight: 1.2
    letterSpacing: -0.025em
  headline-md:
    fontFamily: Manrope
    fontSize: 32px
    fontWeight: 700
    lineHeight: 1.2
    letterSpacing: -0.031em
  headline-sm:
    fontFamily: Manrope
    fontSize: 20px
    fontWeight: 600
    lineHeight: 1.2
  body-md:
    fontFamily: Manrope
    fontSize: 14px
    fontWeight: 400
    lineHeight: 1.5
  body-lg:
    fontFamily: Manrope
    fontSize: 19px
    fontWeight: 600
    lineHeight: 1.5
  label-md:
    fontFamily: Manrope
    fontSize: 16px
    fontWeight: 700
    lineHeight: 1.5
  label-sm:
    fontFamily: Open Sans
    fontSize: 12px
    fontWeight: 600
    lineHeight: 1.33
  headline-lg-mobile:
    fontFamily: Manrope
    fontSize: 35px
    fontWeight: 800
    lineHeight: 1.2
    letterSpacing: -0.029em
  headline-md-mobile:
    fontFamily: Manrope
    fontSize: 28px
    fontWeight: 700
    lineHeight: 1.2
    letterSpacing: -0.036em
rounded:
  sm: 4px
  md: 100px
spacing:
  xs: 4px
  sm: 8px
  md: 12px
  lg: 20px
  xl: 60px
  gutter: 8px
components:
  button-primary:
    backgroundColor: "{colors.primary}"
    textColor: "{colors.on-primary}"
    typography: "{typography.label-sm}"
    rounded: "{rounded.sm}"
    padding: 8px
    height: 32px
  button-primary-hover:
    backgroundColor: "#091E7C"
  button-outline:
    backgroundColor: "{colors.background}"
    textColor: "{colors.on-surface}"
    typography: "{typography.body-md}"
    rounded: "{rounded.sm}"
    padding: 4px 12px
    height: 30px
  button-ghost:
    backgroundColor: "{colors.surface-container-low}"
    textColor: "{colors.primary}"
    typography: "{typography.label-sm}"
    rounded: 3px
    padding: 7px 8px
    height: 30px
  input-field:
    textColor: "{colors.on-surface}"
    typography: "{typography.body-md}"
    rounded: 0px
    padding: 16px
  card:
    backgroundColor: "{colors.background}"
    textColor: "#000000"
    typography: "{typography.label-md}"
    rounded: 8px
    padding: 0px
---

# Bubble Design System

## Overview

Bubble describes itself as: “Build with AI when you want speed, edit visually when you want precision — design, database, logic, and privacy rules. Go from idea to launched app fast.” The interface is light, built on **White (#FFFFFF)** with **Charcoal (#1A1A1A)** text, and **Dark Indigo (#0C29AB)** as the main accent.

Type is set in **Manrope** and **Open Sans**. Headlines run large with tight negative tracking; body text is 14px. Depth comes from soft drop shadows. Corners are mostly 4px.

Measured from [bubble.io](https://bubble.io/) on November 4, 2026 at 1440×900 and 390×844 from 174 rendered elements. Values are computed styles from the live page, not the original source files.

## Colors

The palette has 10 roles.

- **White (#FFFFFF):** Page background, seen 9 times. Token `background`, CSS `--cc-primary_contrast`.
- **Charcoal (#1A1A1A):** Primary text and headings, seen 29 times. Token `on-surface`.
- **Slate (#525252):** Secondary text, seen 4 times. Token `on-surface-variant`, CSS `--color_coIvQ4_default`.
- **Cool Snow (#F5FAFF):** Raised areas one step from the page, seen 1 time. Token `surface-container-low`, CSS `--cc-cobalt-10`.
- **Cool Mist (#E4EAF1):** Borders and dividers, seen 4 times. Token `outline`.
- **Light Blue (#AFC0D4):** Secondary dividers, seen 1 time. Token `outline-variant`, CSS `--cc-livid-40`.
- **Dark Indigo (#0C29AB):** Primary buttons and calls to action, seen 8 times. Token `primary`, CSS `--color_coIJl2_default`.
- **White (#FFFFFF):** Text and icons on primary. Token `on-primary`.
- **Light Orange (#FED39C):** Accent in logos and imagery. Token `secondary`.
- **Light Purple (#DBA5DE):** Accent in logos and imagery. Token `tertiary`.

## Typography

**Manrope** and **Open Sans** share the interface. Fallback stack: `Manrope`. Other loaded fonts: Reddit Mono, founders grotesk medium, founders grotesk regular, founders grotesk semibold.

- **headline-display:** Manrope 51px at weight 800, line height 1.2, tracking -0.02em. Page title (h1).
- **headline-lg:** Manrope 40px at weight 800, line height 1.2, tracking -0.025em (35px on mobile). Section headings (h2).
- **headline-md:** Manrope 32px at weight 700, line height 1.2, tracking -0.031em (28px on mobile). Sub-section headings.
- **headline-sm:** Manrope 20px at weight 600, line height 1.2. Card and feature titles.
- **body-md:** Manrope 14px at weight 400, line height 1.5. Body text.
- **body-lg:** Manrope 19px at weight 600, line height 1.5. Lead paragraphs.
- **label-md:** Manrope 16px at weight 700, line height 1.5. Buttons, navigation and labels.
- **label-sm:** Open Sans 12px at weight 600, line height 1.33. Small labels and badges.

## Layout

Spacing is mostly on a 4px grid (87% of measured values), with some off-grid steps. Match the measured scale rather than rounding everything.

- **Scale:** xs 4px, sm 8px, md 12px, lg 20px, xl 60px.
- **Gaps:** 8px is the most common gap in flex and grid layouts.
- **Breakpoints:** 500px, 630px, 768px, 992px, 993px.

## Elevation & Depth

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

- `rgba(0, 0, 0, 0.03) 2px 4px 6px 0px`
- `rgba(0, 0, 0, 0.06) 2px 4px 16px 0px`

## Shapes

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

- **sm (4px):** 112 elements.
- **md (100px):** 20 elements.

## Components

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

- **button-primary (“Start building”):** #0C29AB fill, #FFFFFF text, 12px/600, 4px radius, padding 8px.
- **button-primary-hover:** background #091E7C, text #FFFFFF on hover.
- **button-outline (“SaaS platform”):** #FFFFFF fill, #1A1A1A text, 14px/400, 4px radius, padding 4px 12px, border 1px solid #E4EAF1, shadow `rgba(0, 0, 0, 0.03) 2px 4px 6px 0px`.
- **button-ghost (“Web”):** #F5FAFF fill, #0C29AB text, 12px/600, 3px radius, padding 7px 8px.
- **input-field (“An internal tool to manage my te”):** transparent fill, #1A1A1A text, 14px/400, padding 16px.
- **card:** #FFFFFF fill, #000000 text, 16px/400, 8px radius, padding 0px.

## Do's and Don'ts

- Do use #FFFFFF for the page and lift surfaces in small steps: #F5FAFF.
- Do keep text in 2 levels: #1A1A1A, #525252.
- Do reserve #0C29AB for primary actions and key highlights.
- Do set headlines in Manrope with tight tracking (-0.02em).
- Do reuse the measured spacing steps (8px, 12px, 20px).
- Do use 4px corners on most elements; larger surfaces also use 100px.
- Don't introduce new font families beyond Manrope and Open Sans.
- Don't use #0C29AB for large backgrounds or body text.
- Don't make interface transitions slower than 0.2s.

## Motion

Interface transitions are quick: 0.2s, 0.15s. Longer ambient animations run 0.9s, 0.8s.

- **Easing:** `ease`, `cubic-bezier(0.2, 0.7, 0.2, 1)`, `ease-in-out`.
- **Reduced motion:** the page responds to `prefers-reduced-motion`.

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

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