Flux

v15 · published

Electric blue on black, built to move.

vividkineticbolddarkelectric

Flux is a re-reading of the no-code-canvas aesthetic, where the interface itself is the showreel. A true near-black stage lets floating cards hover on layered shadows and hairline-thin white edges, while a single electric blue cuts through as the signal color and a creative violet answers it. The signature is light in the dark: a radial spotlight gradient washes from a bright corner into the void, the same move the source spends on its hero. Type is a confident geometric grotesk set tight, motion is everywhere and effortless, and every surface feels like it could be dragged, nudged, and published. It feels kinetic, premium, and unmistakably made by people who design for a living.

Open the playground →Fork it · design a page →

re-imagined from https://www.framer.com

Use in your project

Pull this design system into any project - it follows the system's tokens, recipes and rules. Run the commands yourself, or let your coding agent set it up and build.

1 · Authenticate

npx synthesisui@latest login

2 · Add this design system

npx synthesisui add flux --version 15

3 · Import the tokens in your global CSS

@import "_synthesisui/ds/flux/tokens.css";
@import "_synthesisui/ds/flux/theme.css";

Ask your agent

Use the "Flux" design system (slug: flux) to: build the UI I describe next

First make sure it's installed: run `npx synthesisui add flux` if `_synthesisui/ds/flux/` isn't in the project yet.

Read these files first (highest authority first):
- _synthesisui/ds/flux/rules.md - project rules for this system (if present); obey them above everything else
- _synthesisui/ds/flux/philosophy.md - the mission, voice and principles (if present); let it shape every screen
- _synthesisui/ds/flux/v15/GUIDE.md - how to apply the system, the recipes and the token vocabulary

Follow this contract (target framework: next):
- First check whether this refers to UI that already exists in the project. If it does, modify only what's needed and keep the rest intact and on-system. If it doesn't, build it new.
- Scope the markup with `data-ds="flux"` (or rely on it at the app root).
- Style with the design system only: reuse the `.ds-*` recipe classes and the DS-backed Tailwind utilities (`bg-primary`, `text-foreground`, `p-md`, `rounded-lg`, `font-display`…). Never use raw hex/px outside the system's scale.
- Make sure `tokens.css` + `theme.css` are imported in the global CSS (see the GUIDE's "How to apply").
- Wire the behavior yourself (open/close, focus, routing) - the system ships the looks, not the JS.

Composition (make it look composed, not just correct):
- Cap page content with a max-width container and center it - this DS ships `max-w-app` for dashboards/wide UI and `max-w-prose` for text columns. Don't stretch content edge-to-edge.
- Give the page a complete, intentional layout: clear vertical rhythm, sensible density and grouped sections. Never leave a single thin row floating on an empty screen.

Deliver senior-level, production-quality code: clean structure, accessible (ARIA + keyboard), and responsive.

Paste into Claude Code, Cursor or any coding agent. From your project you can also run npx synthesisui use flux "…".

Dependencies

What to install or load so the system renders at full fidelity - it ships token names and recipes, not the assets.

Web fonts - Space Grotesk, Inter, JetBrains Mono
The system ships token names, not the fonts. Load them (Google Fonts, next/font or Fontsource) or type falls back to a generic family and loses the system's identity.
Icons - Lucidenpm i lucide-react
Components reference Lucide icon names. Install it (or swap in your own icon set) to render them.
Chartsnpm i recharts
Charts are themed through your series tokens, but you bring the rendering library (the gallery uses Recharts).

Color

Primitives and roles.

Named scales forged by the synthesis; semantic roles only ever point at them.

color.jade

400#1fd29b

500#00bb88

600#009e72

color.rose

400#ff6b8a

500#f43f6b

600#d62a55

color.veil

500#080808cc

color.void

50#ffffff

100#f5f5f5

200#e5e5e5

300#cccccc

400#999999

500#666666

600#404040

700#242424

800#171717

900#111111

950#080808

color.amber

400#ffcf4d

500#ffb020

600#e0901a

color.glass

100#ffffff0d

200#ffffff14

300#ffffff26

color.violet

300#b3a0ff

400#9580ff

500#7c5cff

600#6038f0

color.electric

300#66c2ff

400#33adff

500#0099ff

600#0055ff

700#0042c8

color.semantic - resolved live via CSS variables

info

{color.electric.400}

faint

{color.void.500}

muted

{color.void.400}

scrim

{color.veil.500}

accent

{color.violet.500}

border

{color.glass.200}

canvas

{color.void.950}

danger

{color.rose.500}

raised

{color.void.800}

overlay

{color.void.700}

primary

{color.electric.500}

success

{color.jade.500}

surface

{color.void.900}

warning

{color.amber.500}

foreground

{color.void.50}

color.series - categorical data-viz palette (bg-series-*)

series-1

series-2

series-3

series-4

series-5

series-6

series-7

series-8

Foundations

Shape & depth.

Corner radius, spacing rhythm and elevation - the physical feel of the system.

radius

full

spacing

3xs2px

2xs4px

xs8px

sm10px

md15px

lg20px

xl40px

2xl60px

3xl96px

shadow

glow

ring

Typography

The voice of the system.

Display: Space Grotesk · Body: Inter · Mono: JetBrains Mono

xsDesign, set free0.75rem / 1.45

smDesign, set free0.8125rem / 1.5

baseDesign, set free0.9375rem / 1.6

lgDesign, set free1.25rem / 1.35

xlDesign, set free1.625rem / 1.25

2xlDesign, set free2.25rem / 1.1

displayDesign, set free3.875rem / 1.0

Motion

How it breathes.

Every keyframe runs live below, dressed in the system's own colors - durations, easing curves and the interactions they power.

keyframes - 9 live

fade

rise

spin

blink

float

shimmer

scale-in

glow-pulse

spotlight-drift

easings

standardease

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

smoothcubic-bezier(0.44, 0, 0.56, 1)

durations

base · 0.3sfast · 0.2sslow · 0.6sambient · 1s

interaction patterns

enterreveal

Cards scale up into place as they enter.

enterentrance

Content rises and fades in smoothly.

hoverhover-lift

Surfaces lift toward the viewer on hover.

loopsignal-glow

Primary CTAs breathe an electric-blue glow.

loopcursor-blink

The text cursor blinks while typing.

looploading-spin

The loader ring spins while work happens.

loopambient-float

Floating UI cards drift gently above the stage.

Components · 45

Recipes, rendered live.

Every value below is a token reference resolved by the renderer - hover, toggle and switch tabs to feel the states. Bespoke components are rendered from their anatomy hint.

ds-badge

Pill chip for status and metadata; colored text on a glassy fill.

intent

infoaccentdangerneutralprimarysuccesswarning

ds-button

Full-pill action. Primary carries the electric blue and a blue glow; the light variant is a crisp white pill, the way the source spends its CTAs.

intent

ds-cursor

bespoke · pill

The bespoke multiplayer cursor tag - a live collaborator's name riding an electric pill, the signature of a shared canvas.

tone

▸ Marco▸ Marco

ds-spotlight

bespoke · surface

The bespoke hero backdrop - a radial wash of electric light pulled out of the void from one bright corner.

tone

Design bold. Launch fast.

ds-card

Floating panel on the dark stage - layered shadow, hairline white edge, lifts toward the viewer on hover.

padding

Default

A card wearing this system.

None

A card wearing this system.

emphasis

Default

A card wearing this system.

Elevated

A card wearing this system.

ds-select

Field trigger that reveals a focus ring on interaction.

Choose an option

ds-input

Field on glass; an electric ring snaps on at focus.

ds-avatar

Identity token - sized circle with initials or image.

size

MAMAMA

ds-link

bespoke · surface

Inline text link, for words inside sentences - the underline is the affordance, so it reads as a link without relying on colour alone. For standalone actions use button; for navigation chrome use navbar/sidebar items.

A surface wearing this system.

ds-kicker

bespoke · text

Mono uppercase eyebrow with wide tracking - the HUD microtype that labels a section ("01 · ECOSYSTEM"). Use above headings; data-tone="accent" for the highlighted variant.

tone

defaultaccent

ds-readout

bespoke · text

HUD data readout - a mono tabular value over a micro uppercase label ("42s · AVG RENDER"). The corner instrument of cinematic scenes; pair with the count-up hook for live-feeling numbers.

ValueLabel

ds-heading

bespoke · text

Display heading on the system's type scale - the display family at a semibold weight. Pick a `size` step (defaults to 2xl) so headings stay on-scale without hand-set styles.

size

lgxl2xldisplay

ds-text

bespoke · text

Body copy on the system's type scale. Pick a `size` step and a `tone`; defaults to base body text on the foreground color - so text stays on-system without hand-set styles.

size

xssmbaselg

tone

defaultmuted

ds-stack

bespoke · surface

Vertical layout primitive - a flex column with a token `gap` (defaults to md). Stack sections/cards without hand-set flex styles.

gap

A surface wearing this system.

align

A surface wearing this system.

ds-row

bespoke · surface

Horizontal layout primitive - a centered flex row with a token `gap` (defaults to sm). Compose toolbars/inline groups without hand-set flex styles.

gap

A surface wearing this system.

justify

A surface wearing this system.

align

A surface wearing this system.