UI and animation libraries · DESIGN.md · measured November 4, 2026

Aceternity UI design system

Light interface · Local x2wexs · 5.6px corners

#FFFFFF
#F5F5F5
#09090B
#3074FE

Download DESIGN.md

From ui.aceternity.com ↗ · 438 elements at 1440×900 and 390×844 Independent analysis, not affiliated with Aceternity UI

Aceternity UI color palette

14 colors with hex codes, grouped by where each one is used on the page.

Surfaces

White#FFFFFFbackground · --cardPage background · 46×

Snow#F5F5F5surface-container-lowRaised areas one step from the page · 13×

Mist#E5E5E5surface-containerCards and panels · 6×

Vivid Blue 25%#2B7FFF40overlayTranslucent fill for cards and controls · 4×

Charcoal#171717inverse-surfaceHigh-contrast fills · 2×

Text

Near Black#09090Bon-surface · --popover-foregroundPrimary text and headings · 35×

Graphite#404040on-surface-variantSecondary text · 41×

Slate#525252on-surface-mutedMuted text and metadata · 42×

Slate#737373on-surface-subtleSubtle text and placeholders · 27×

Near Black#000000on-primaryText and icons on primary

Accents

Vivid Blue#3074FEprimaryMain accent color · 6×

Vivid Blue#1DA1F2secondaryAccent · 17×

Vivid Amber#F0B100tertiaryAccent · 5×

Borders

Silver#D4D4D4outlineBorders and dividers · 2×

Gradients

Aceternity UI fonts and type scale

One family carries the whole interface.

AaLocal x2wexsWeights 400, 500, 600, 700__Local_x2wexs, system-ui, -apple-system, BlinkMacSystemFont

headline-displayPage title (h1)Aceternity UI48px · 600 · 1 · -0.025em
mobile 30px

headline-lgSection headings (h2)The quick brown fox jumps over the lazy dog30px · 500 · 1.2 · -0.025em

headline-mdSub-section headingsThe quick brown fox jumps over the lazy dog24px · 600 · 1.33 · -0.025em

headline-smCard and feature titlesThe quick brown fox jumps over the lazy dog20px · 700 · 1.4

body-mdBody textThe quick brown fox jumps over the lazy dog14px · 400 · 1.43

body-lgLead paragraphsThe quick brown fox jumps over the lazy dog16px · 400 · 1.5

label-mdButtons, navigation and labelsThe quick brown fox jumps over the lazy dog16px · 500 · 1.5

label-smSmall labels and badgesThe quick brown fox jumps over the lazy dog14px · 500 · 1.43

Contrast

Text on #FFFFFF

AaAAA19.9:1

AaAAA10.3:1

AaAAA7.8:1

AaAA4.7:1

Spacing

No strict grid · 74% are multiples of 4px

xs2px

sm8px

md16px

lg32px

xl40px

gutter8px

section80px

margin32px

container1280px

Shapes

Corner radii, most used first.

xs5.6px · 128×

md10px · 80×

lg20px · 48×

sm7.6px · 44×

xl24px · 28×

Depth

Shadow

Ring

Shadow

Aceternity UI UI components

Rebuilt from the measured CSS.

Search ⌘ K

button-outlineOutlined button

Resources

button-ghostText button

Inline link

linkInline link

Motion

Interface transitions

0.2s0.15s0.3s

cubic-bezier(0.4, 0, 0.2, 1)

Do’s and don’ts

Rules written from the measurements, so a coding agent stays on style.

Use #FFFFFF for the page and lift surfaces in small steps: #F5F5F5, #E5E5E5.
Keep text in 4 levels: #09090B, #404040, #525252, #737373.
Reserve #3074FE for primary actions and key highlights.
Set headlines in Local x2wexs with tight tracking (-0.025em).
Reuse the measured spacing steps (8px, 16px, 32px).
Use 5.6px corners on most elements; larger surfaces also use 10px, 20px and 7.6px.
Introduce new font families beyond Local x2wexs.
Use #3074FE for large backgrounds or body text.
Make interface transitions slower than 0.3s.

Aceternity UI DESIGN.md203 lines

---
version: alpha
name: Aceternity UI
description: "Light interface measured from ui.aceternity.com: Local x2wexs type, vivid blue accents, tonal surfaces and 5.6px corners."
colors:
  background: "#FFFFFF"
  surface: "#FFFFFF"
  on-surface: "#09090B"
  on-background: "#09090B"
  on-surface-variant: "#404040"
  on-surface-muted: "#525252"
  on-surface-subtle: "#737373"
  surface-container-low: "#F5F5F5"
  surface-container: "#E5E5E5"
  overlay: "#2B7FFF40"
  outline: "#D4D4D4"
  primary: "#3074FE"
  on-primary: "#000000"
  inverse-surface: "#171717"
  secondary: "#1DA1F2"
  tertiary: "#F0B100"
typography:
  headline-display:
    fontFamily: Local x2wexs
    fontSize: 48px
    fontWeight: 600
    lineHeight: 1
    letterSpacing: -0.025em
  headline-lg:
    fontFamily: Local x2wexs
    fontSize: 30px
    fontWeight: 500
    lineHeight: 1.2
    letterSpacing: -0.025em
  headline-md:
    fontFamily: Local x2wexs
    fontSize: 24px
    fontWeight: 600
    lineHeight: 1.33
    letterSpacing: -0.025em
  headline-sm:
    fontFamily: Local x2wexs
    fontSize: 20px
    fontWeight: 700
    lineHeight: 1.4
  body-md:
    fontFamily: Local x2wexs
    fontSize: 14px
    fontWeight: 400
    lineHeight: 1.43
  body-lg:
    fontFamily: Local x2wexs
    fontSize: 16px
    fontWeight: 400
    lineHeight: 1.5
  label-md:
    fontFamily: Local x2wexs
    fontSize: 16px
    fontWeight: 500
    lineHeight: 1.5
  label-sm:
    fontFamily: Local x2wexs
    fontSize: 14px
    fontWeight: 500
    lineHeight: 1.43
  headline-display-mobile:
    fontFamily: Local x2wexs
    fontSize: 30px
    fontWeight: 600
    lineHeight: 1.2
    letterSpacing: -0.025em
rounded:
  xs: 5.6px
  sm: 7.6px
  md: 10px
  lg: 20px
  xl: 24px
spacing:
  xs: 2px
  sm: 8px
  md: 16px
  lg: 32px
  xl: 40px
  gutter: 8px
  section: 80px
  margin: 32px
  container: 1280px
components:
  button-outline:
    backgroundColor: "{colors.background}"
    textColor: "{colors.on-surface-subtle}"
    rounded: 7px
    padding: 0px 4px 0px 8px
    height: 28px
  button-ghost:
    typography: "{typography.label-sm}"
    rounded: "{rounded.sm}"
    padding: 0px 12px
  link:
    textColor: "{colors.on-surface-subtle}"
---

# Aceternity UI Design System

## Overview

Aceternity UI describes itself as: “Aceternity UI is a React component library with 200+ copy-paste components, blocks, and landing page templates built with Tailwind CSS and Motion.” The interface is light, built on **White (#FFFFFF)** with **Near Black (#09090B)** text, and **Vivid Blue (#3074FE)** as the main accent.

Type is set in **Local x2wexs**. Headlines run large with tight negative tracking; body text is 14px. Depth comes from soft drop shadows. Corners are mostly 5.6px.

Measured from [ui.aceternity.com](https://ui.aceternity.com/) on November 4, 2026 at 1440×900 and 390×844 from 438 rendered elements. Values are computed styles from the live page, not the original source files.

## Colors

The palette has 14 roles, plus gradient stops #3F80FF, #2867F2, #77A5FF, #497CEB.

- **White (#FFFFFF):** Page background, seen 46 times. Token `background`, CSS `--card`.
- **Near Black (#09090B):** Primary text and headings, seen 35 times. Token `on-surface`, CSS `--popover-foreground`.
- **Graphite (#404040):** Secondary text, seen 41 times. Token `on-surface-variant`.
- **Slate (#525252):** Muted text and metadata, seen 42 times. Token `on-surface-muted`.
- **Slate (#737373):** Subtle text and placeholders, seen 27 times. Token `on-surface-subtle`.
- **Snow (#F5F5F5):** Raised areas one step from the page, seen 13 times. Token `surface-container-low`.
- **Mist (#E5E5E5):** Cards and panels, seen 6 times. Token `surface-container`.
- **Vivid Blue 25% (#2B7FFF40):** Translucent fill for cards and controls, seen 4 times. Token `overlay`.
- **Silver (#D4D4D4):** Borders and dividers, seen 2 times. Token `outline`.
- **Vivid Blue (#3074FE):** Main accent color, seen 6 times. Token `primary`.
- **Near Black (#000000):** Text and icons on primary. Token `on-primary`.
- **Charcoal (#171717):** High-contrast fills, seen 2 times. Token `inverse-surface`.
- **Vivid Blue (#1DA1F2):** Accent, seen 17 times. Token `secondary`.
- **Vivid Amber (#F0B100):** Accent, seen 5 times. Token `tertiary`.

## Typography

**Local x2wexs** carries the whole interface. Fallback stack: `__Local_x2wexs, system-ui, -apple-system, BlinkMacSystemFont`. Other loaded fonts: __Local_x2wexs.

- **headline-display:** Local x2wexs 48px at weight 600, line height 1, tracking -0.025em (30px on mobile). Page title (h1).
- **headline-lg:** Local x2wexs 30px at weight 500, line height 1.2, tracking -0.025em. Section headings (h2).
- **headline-md:** Local x2wexs 24px at weight 600, line height 1.33, tracking -0.025em. Sub-section headings.
- **headline-sm:** Local x2wexs 20px at weight 700, line height 1.4. Card and feature titles.
- **body-md:** Local x2wexs 14px at weight 400, line height 1.43. Body text.
- **body-lg:** Local x2wexs 16px at weight 400, line height 1.5. Lead paragraphs.
- **label-md:** Local x2wexs 16px at weight 500, line height 1.5. Buttons, navigation and labels.
- **label-sm:** Local x2wexs 14px at weight 500, line height 1.43. Small labels and badges.

## Layout

Spacing is mostly on a 4px grid (74% of measured values), with some off-grid steps. Match the measured scale rather than rounding everything.

- **Scale:** xs 2px, sm 8px, md 16px, lg 32px, xl 40px.
- **Sections:** 80px vertical padding between major sections.
- **Gaps:** 8px is the most common gap in flex and grid layouts.
- **Container:** content is capped at 1280px.
- **Page margin:** 32px on each side of full-width sections.

## Elevation & Depth

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

- `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, oklab(0 0 0 / 0.05) 0px 0px 0px 1px, oklab(0 0 0 / 0.1) 0px 1px 3px 0px, oklab(0 0 0 / 0.1) 0px 1px 2px -1px`
- `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, oklab(0 0 0 / 0.1) 0px 0px 0px 1px, oklab(0 0 0 / 0.1) 0px 1px 3px 0px, oklab(0 0 0 / 0.1) 0px 1px 2px -1px`
- `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, oklab(0 0 0 / 0.05) 0px 0px 0px 1px, oklab(0 0 0 / 0.05) 0px 1px 3px 0px, oklab(0 0 0 / 0.05) 0px 1px 2px -1px`

Hairline rings and inset highlights also appear: `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, oklch(0.623 0.214 259.815) 0px 0px 0px 1px, rgba(0, 0, 0, 0) 0px 0px 0px 0px`.

## Shapes

Most elements use 5.6px corners. Measured radii, most used first:

- **xs (5.6px):** 128 elements.
- **md (10px):** 80 elements.
- **lg (20px):** 48 elements.
- **sm (7.6px):** 44 elements.
- **xl (24px):** 28 elements.

## Components

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

- **button-outline (“Search ⌘ K”):** #FFFFFF fill, #737373 text, 12px/400, 7px radius, padding 0px 4px 0px 8px, shadow `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, oklab(0 0 0 / 0.05) 0px 0px 0px 1px, oklab(0 0 0 / 0.05) 0px 1px 3px 0px, oklab(0 0 0 / 0.05) 0px 1px 2px -1px`.
- **button-ghost (“Resources”):** transparent fill, 14px/500, 7.6px radius, padding 0px 12px.
- **link:** transparent fill, #737373 text, padding 0px.

## Do's and Don'ts

- Do use #FFFFFF for the page and lift surfaces in small steps: #F5F5F5, #E5E5E5.
- Do keep text in 4 levels: #09090B, #404040, #525252, #737373.
- Do reserve #3074FE for primary actions and key highlights.
- Do set headlines in Local x2wexs with tight tracking (-0.025em).
- Do reuse the measured spacing steps (8px, 16px, 32px).
- Do use 5.6px corners on most elements; larger surfaces also use 10px, 20px and 7.6px.
- Don't introduce new font families beyond Local x2wexs.
- Don't use #3074FE for large backgrounds or body text.
- Don't make interface transitions slower than 0.3s.

## Motion

Interface transitions are quick: 0.2s, 0.15s, 0.3s.

- **Easing:** `cubic-bezier(0.4, 0, 0.2, 1)`.
- **Reduced motion:** the page responds to `prefers-reduced-motion`.

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

Fonts

What font does Aceternity UI use?

Aceternity UI uses Local x2wexs (weights 400, 500, 600 and 700) on ui.aceternity.com. Page titles are 48px at weight 600 (30px on phones) and body text is 14px. Measured on November 4, 2026.

AaLocal x2wexs · 400, 500, 600, 700

Find every font on ui.aceternity.com with Font finder →

Colors

Aceternity UI colors: palette and hex codes

Aceternity UI’s main colors are #FFFFFF (white) for the background, #09090B (near black) for text and #3074FE (vivid blue) as the main accent, with #1DA1F2 (vivid blue) and #F0B100 (vivid amber) as other accents. Measured on November 4, 2026.

#FFFFFF · white
#09090B · near black
#404040 · graphite
#525252 · slate
#737373 · slate
#F5F5F5 · snow
#E5E5E5 · mist
#D4D4D4 · silver

Get ui.aceternity.com’s palette as CSS or Tailwind with Colors →

Tech stack

What is Aceternity UI built with?

Aceternity UI’s website (ui.aceternity.com) is built with React, Tailwind CSS, Cloudflare, Three.js and React Three Fiber. Measured on November 4, 2026.

JavaScript framework: React 19.0.0
Animation & 3D: Three.js r168, React Three Fiber, Motion
Analytics: Plausible, PostHog, Cloudflare Web Analytics
Hosting & CDN: Cloudflare
Marketing & support: Intercom
Payments & commerce: Stripe

Check ui.aceternity.com live with Tech stack →

What you can build with it

Landing pages, pricing tables, dashboards: your AI coding agent builds them in this style, with these colors, fonts, spacing and buttons instead of its defaults.

Download DESIGN.md, put it in your project’s root folder, then ask your agent for a page.

Prompt · DESIGN.md attached

Build a landing page for my product. Follow for every color, font, spacing value, corner and button.

Guides

Need a page behind a login?

The DESIGN.md generator Chrome extension makes one from any page you have open, including dashboards and pages behind a login.

See the Chrome extension

More in UI and animation libraries

All DESIGN.md examples →

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VuetifyBrand vuetifyjs.com · Roboto

BootstrapBrand getbootstrap.com · Geist

GSAPBrand gsap.com · Mori

Material DesignBrand m3.material.io · Google Sans

Magic UIBrand magicui.design · Geist

Not in the library? Make a DESIGN.md from any site.

FAQ

Aceternity UI design system questions

What font does Aceternity UI use?

Aceternity UI’s website uses Local x2wexs (weights 400, 500, 600 and 700). Page titles are 48px at weight 600 (30px on phones) and body text is 14px. Measured on November 4, 2026.

What are the Aceternity UI colors and hex codes?

On ui.aceternity.com: #FFFFFF (white) for the background, #09090B (near black) for text and #3074FE (vivid blue) as the main accent, with #1DA1F2 (vivid blue) and #F0B100 (vivid amber) as other accents. The color palette above lists all 14 colors with their hex codes and where each one is used.

What is the Aceternity UI design system?

The design system on this page is ui.aceternity.com’s, as measured on November 4, 2026: Local x2wexs type, #3074FE as the main color and 5.6px corners, written down as a DESIGN.md. It is not Aceternity UI’s own documentation.

What is Aceternity UI built with?

Aceternity UI’s website (ui.aceternity.com) is built with React, Tailwind CSS, Cloudflare, Three.js and React Three Fiber. The full tech stack Sitepeel found: React, Three.js, Plausible, PostHog, Cloudflare, React Three Fiber, Cloudflare Web Analytics, Intercom, Stripe and Tailwind CSS. Measured on November 4, 2026.

What is the Aceternity UI DESIGN.md?

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

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

Can I use Aceternity UI’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 Aceternity UI’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.