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πŸ”’ultraviolet.design
Ultraviolet
104 design seeds. One button. Zero design skills required.

Your product works. Now make it beautiful.

SeedFlip gives you curated design seeds β€” fonts, colors, shadows, the works β€” applied to a real page in one click. Export as CSS, Tailwind, shadcn/ui, or a complete DESIGN.md your AI agent actually understands. Or plug it straight into your editor with the MCP server.

β€œConsider me flipped.”

β€” @nikkimitss, Passive Studios

Flip β†’
Watch it work ↓

Works with your stack

104
CURATED SEEDS
98
PREMIUM FREE FONTS
7
EXPORT FORMATS
Aa
Real type pairings.
Google Fonts loaded live. Heading + body combos that actually work together β€” weights, spacing, and scale already dialed in. Not a font picker. A font decision.
β—‘
Complete color systems.
Background, surface, text, muted, accent, accent-soft, borders, gradients. Every seed has 10+ coordinated tokens. Not five swatches on a mood board. A system.
{ }
Ship-ready exports.
CSS Variables. Tailwind Config. shadcn/ui theme. IDE rule files. Or connect the MCP server and let your agent pull seeds directly. Seven formats. Zero guesswork.
β€œ

β€œAI gave every developer the power to build. It did not give them the power to design. The code was never the bottleneck. The design was. It still is.”

CURRENT SEED TYPOGRAPHY
Satoshi
Every seed pairs a heading and body font that actually belong together. Weights, spacing, and scale β€” already decided. You just flip.
LOCK & FLIP
Keep what you love. Flip the rest.
Lock any category β€” type, palette, shape, or atmosphere β€” and flip everything else. Thousands of combinations from 104 curated seeds. PRO
THE LAB
Extract the DNA.
Every way to take your seed home. CSS Variables. Tailwind Config. shadcn/ui theme. IDE rule files for Cursor, Claude, and Windsurf. Or connect the MCP server and let your agent pull seeds on demand.
THE ARCHIVE
104 seeds. All killer. No filler.
Browse every design seed in the collection. Dark, light, neon, editorial, brutalist, minimal β€” each one hand-curated with real Google Fonts and a full DESIGN.md. Your daily flip lands in your inbox every morning.
β€œ

I described the same design to Claude four different times and got four completely different results. Not one of them looked right. The problem was never my prompting. I didn’t have a design seed. I had adjectives. SeedFlip gave me the actual values. First try. Done.

J
Jamie K.
Indie Hacker
β€œ

My cofounder finally said it out loud. β€œThis looks like every other app on Product Hunt.” He was right. Same zinc palette. Same Inter font. Same everything. Pulled a SeedFlip seed into our Tailwind config and the next build looked like a different company made it.

P
Priya S.
Technical Cofounder
β€œ

I’ve shipped six projects and every single one looked like a developer made it. Because one did. Plugged the MCP server into Cursor, told it to pull something editorial and warm. Twenty minutes later I had a product I’d actually screenshot. No designer. No Figma file. Just the right inputs.

M
Marcus C.
Design Engineer

Simple pricing.

Free gets you flipping. Pro gets you shipping.

Free
$0
forever
βœ“ Unlimited flips
βœ“ 104 curated seeds
βœ“ CSS Variables export
βœ“ CLI + MCP server
βœ“ Edit mode
βœ“ Full Archive access
Start Flipping β†’
Just your email. That's it.
Pro
$19/mo
cancel anytime
Everything in Free, plus:
βœ“ Lock fonts, colors, shape & atmosphere
βœ“ DESIGN.md export
βœ“ Tailwind + shadcn/ui exports
Get Pro β†’
DESIGN.md is a complete design system document. Creative direction, exact tokens, and implementation code. Drop it in your repo and your AI builds to spec.

You're one flip away from looking like you hired a designer.

104 curated design seeds. Real fonts. Real color theory. AI-ready prompts that actually work. No Figma file. No design committee. No three-week sprint to pick a gray.

Flip β†’
SEED
Ultraviolet
VIBE
Deploy at midnight
BEST FOR
deployment and DevOps pipeline visualization toolsAI inference monitoring dashboards with latency chartsserverless platform admin consolesreal-time database query performance monitors
01deep purple background separates from generic dark themes
02Satoshi heading paired with Inter body creates modern hierarchy
03violet glow shadow creates nebula-like depth
04lilac accent feels electric against purple-black
05purple-tinted borders reinforce color story in structure
Skip if:β€’ your brand colors are warm earth tones. this violet-saturated environment clashes with orange or terracotta palettesβ€’ you need high legibility for elderly users. lavender-white text on deep purple requires careful contrast checkingβ€’ your product is content-heavy with long paragraphs. the atmospheric purple tones distract from sustained reading
104 design seeds. One button. Zero design skills required.

Your product works. Now make it beautiful.

SeedFlip gives you curated design systems β€” fonts, colors, shadows, the works β€” applied to a real page in one click. Export as CSS, Tailwind, or a complete DESIGN.md your agent actually understands.

β€œConsider me flipped.”

β€” @nikkimitss, Passive Studios

Flip β†’
Watch it work ↓

Works with your stack

104
CURATED SEEDS
98
PREMIUM FREE FONTS
7
EXPORT FORMATS
Aa
Real type pairings.
Google Fonts loaded live. Heading + body combos that actually work together β€” weights, spacing, and scale already dialed in. Not a font picker. A font decision.
β—‘
Complete color systems.
Background, surface, text, muted, accent, accent-soft, borders, gradients. Every seed has 10+ coordinated tokens. Not five swatches on a mood board. A system.
{ }
Ship-ready exports.
CSS Variables. Tailwind Config. Or a complete DESIGN.md that tells Cursor exactly what to build. Paste it. Watch it materialize. Take all the credit.
β€œ

β€œEvery AI app has the same auth flow, the same Stripe checkout, and the same shadcn components. Design is the last unfair advantage you haven't used yet.”

CURRENT SEED TYPOGRAPHY
Satoshi
Every seed pairs a heading and body font that actually belong together. Weights, spacing, and scale β€” already decided. You just flip.
LOCK & FLIP
Keep what you love. Flip the rest.
Lock any category β€” type, palette, shape, or atmosphere β€” and flip everything else. Thousands of combinations from 104 curated seeds. PRO
THE LAB
Extract the DNA.
Three ways to take your seed home. CSS Variables for purists. Tailwind Config for the utility-class faithful. Or DESIGN.md. A complete design system document your AI agent can follow from the first component. Paste it into Cursor. Watch a styled site materialize.
THE ARCHIVE
104 seeds. All killer. No filler.
Browse every design system in the collection. Dark, light, neon, editorial, brutalist, minimal β€” each one hand-curated with real Google Fonts and a full DESIGN.md. Your daily flip lands in your inbox every morning.
β€œ

I was mass-prompting Claude at 4am trying to describe the β€œvibe” I wanted. Turns out the vibe was 17 CSS variables I didn’t know existed.

J
Jamie K.
Indie Hacker
β€œ

Sent a SeedFlip export to my cofounder. His response was β€œwhy does our app look like a real company now.” We launched that week.

P
Priya S.
Technical Cofounder
β€œ

Tried the β€œmake my app look like Super Unicorn X, Y, Z” prompts. Didn’t work. This did. Wish I found it 12 projects ago.

M
Marcus C.
Design Engineer

Simple pricing.

Free gets you flipping. Pro gets you shipping.

Free
$0
forever
βœ“ Unlimited flips
βœ“ 104 curated seeds
βœ“ CSS Variables export
βœ“ Full Archive access
Start Flipping β†’
Pro
$19/mo
cancel anytime
Everything in Free, plus:
βœ“ Lock fonts, colors, shape & atmosphere
βœ“ DESIGN.md export
βœ“ Tailwind + shadcn/ui exports
Get Pro β†’

You're one flip away from looking like you hired a designer.

104 curated design seeds. Real fonts. Real color theory. AI-ready prompts that actually work. No Figma file. No design committee. No three-week sprint to pick a gray.

Flip β†’

Ultraviolet is what a developer dashboard looks like at 2am when you're deploying and everything is going right. Deep purple-black canvas. Lilac accent that feels electric against the void. This isn't a dark theme with a purple accent. This is a purple theme that happens to be dark. Every surface, every border, every shadow is tinted violet.

Most dark developer themes are gray. Safe. Neutral.

Ultraviolet breaks from that by having a real opinion. Purple isn't just the accent. It's the atmosphere. The background is purple-black. The text is lavender-white. The borders are deep violet. You're inside the color, not just looking at it.

If you're building dev tools, SaaS platforms, or AI products, Ultraviolet separates you from every other dark theme immediately. Your users will remember this one.

The DNA.
Why Ultraviolet works. Every decision, unpacked.
TYPOGRAPHY
Satoshi
paired with
Inter
Weight: 700
?
Β·Spacing: -0.02em
?

Satoshi for headings brings a modern geometric quality with real character. It's not as neutral as Inter and not as quirky as Space Grotesk. It sits in the sweet spot. Technical and contemporary. The kind of font that looks good on a deploy button and a marketing page.

Inter for body text keeps everything readable and clean. The pairing works because Satoshi brings the personality up top and Inter delivers the content below. Two fonts, two jobs, zero conflict. The heading grabs attention. The body serves information.

PALETTE
background#0B0014
surface#13082A
text#E8E0F5
muted#9687b5
accent#C77DFF
border#2E1A54
?
Chart
?
Status
?
text / bg16.0:1 AA
?
accent / bg7.6:1 AA
?

The background is purple-black. Not neutral black with a purple accent on top. Actually, structurally purple in its darkness. Every layer builds on that. The surface cards are richer purple-black. The borders are visible violet. Even the text is lavender-shifted. The whole thing is immersive.

The lilac accent is brighter and lighter than corporate purple. It feels electric, not corporate. Against the deep purple-black backdrop, it creates a nebula effect. Like color emerging from deep space. The violet glow on interactive elements makes the entire interface feel responsive and alive.

SHAPE
6px
10px
14px
?
Clean ten-pixel rounding. Modern, developer-appropriate. Not too tight, not too loose. The purple-tinted borders at the edges of each container make the shape feel integrated with the color story. Edges aren't just structural. They're part of the atmosphere. Even the outlines reinforce the violet world.
ATMOSPHERE
sm
?
md
?
Violet glow
?
Violet glow shadows. A faint purple ring at the edge of every card, plus deep darkness below. The effect is nebula-like. Elements feel suspended in space, lit by distant purple light. At low opacity, the accent color creates a radial glow behind hero sections. The depth system is atmospheric first, hierarchical second.
Rip This.
Export Ultraviolet as code, tokens, or a DESIGN.md for your AI agent.
/* Typography */
--font-heading: 'Satoshi', sans-serif;
--font-body: 'Inter', sans-serif;
--font-heading-weight: 700;
--letter-spacing: -0.02em;
/* Palette */
--color-bg: #0B0014;
--color-surface: #13082A;
--color-text: #E8E0F5;
--color-text-muted: #9687b5;
--color-accent: #C77DFF;
--color-accent-soft: rgba(199,125,255,0.1);
--color-border: #2E1A54;
/* Shape */
--radius: 10px;
--radius-sm: 6px;
--radius-xl: 14px;
/* Depth */
--shadow: 0 0 0 1px rgba(199,125,255,0.1), 0 8px 32px rgba(11,0,20,0.6);
--shadow-sm: 0 2px 8px rgba(11,0,20,0.4);

Drop your email to rip the full DNA.

Tailwind, shadcn/ui & DESIGN.md are Pro exports. Get Pro β†’
Share This.
Send Ultraviolet to your team or post it to X.
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You@youΒ·just now
Vibe coded my app in days. Designed it in seconds. Flip. Rip. Ship. seedflip.co/seed/ultraviolet
Satoshi
ABCDEFGHIJKLM
abcdefghijklm
0123456789 !@#
Body: Inter
✦ seedflip.co
#0B0014
#13082A
#C77DFF
Aa
radius: 10px Β· Violet glow
seedflip.co
3
12
47
1.2K
IG PREVIEW
Typography
Satoshi
Deploy at midnight
in Inter 13pt
700 / -0.02em
Colors
Accent
#C77DFF
Surface
#13082A
Text
#E8E0F5
Border
#2E1A54
Shape & Atmosphere
Heading component
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor.
Action button
Ultraviolet
Satoshi + Inter
seedflip.co
Typography
Satoshi
Deploy at midnight
in Inter 13pt
700 / -0.02em
Colors
Accent
#C77DFF
Surface
#13082A
Text
#E8E0F5
Border
#2E1A54
Shape & Atmosphere
Heading component
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor.
Action button
Ultraviolet
Satoshi + Inter
seedflip.co
Typography
Satoshi
Deploy at midnight
in Inter 13pt
700 / -0.02em
Colors
Accent
#C77DFF
Surface
#13082A
Text
#E8E0F5
Border
#2E1A54
Shape & Atmosphere
Heading component
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor.
Action button
Ultraviolet
Satoshi + Inter
seedflip.co
LINK
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KEEP READING
Dark Mode Color System→Raycast Design System Dark UI→Cursor Rules Design System→