flowmanceStartuify Design System
Startuify is a dark, friendly startup landing page. It feels like a modern SaaS launch site: an ink-navy page, big rounded geometric headlines (THICCCBOI), royal-blue buttons and little blue label tags, translucent charcoal cards, and smiling cut-out portraits set against bold violet and coral triangles. It is tidy and conventional in layout, and loud only in its imagery.
Four signatures make it recognisable:
- Triangle portraits. People are cut out and placed over large flat triangles in electric violet #9D0AFB and coral, or photographed on blush with blurred triangle shards floating around them. The hero portrait bleeds off the right edge.
- Blue dot tags. Most sections open with a small royal-blue tag (The founder, Features, Pricing, Testimonials) holding a darker blue dot and white 15px text, above a white headline-lg title.
- Rounded geometric display type. THICCCBOI 600 with very round bowls; the hero is 87px with −2px tracking and line height 0.9, with a small yellow sparkle doodle over the last word.
- Translucent charcoal steps. Cards and bands are the same charcoal #34353C at 30% and 59% over the navy, never a separate grey.
Startuify is a dark-only design.
Colors
Surfaces
#12141DPage background, ink navy
#34353C · 30%Alternating section gray bands (reads as about #1C1E26)
#34353C · 59%Feature cards, tab pills, pricing header cells (about #26272F)
#34353CInputs and other solid charcoal fills
#34353CInputs
#FFFFFF · 40%Placeholder text on field
Ink
#FFFFFFText on primary
#FFFFFFHeadlines, names, active nav link, button text
#FFFFFF · 70%Body copy in cards and the founder quote
#E5E6ED · 70%The hero lead paragraph (a cool off-white)
#FFFFFF · 50%Nav links, arrow links (Learn more →), table values
#FFFFFF · 40%Small meta (21 uses): roles, footer and table labels
#94959EText of the outlined filter tag (Design)
#FFFFFF#FFFFFFAction
#3C5CCFButtons, section tags, announcement bar, the featured pricing column, the CTA band
#3C5CCFSame as primary: no hover colour is measured
#223EA3The active tab pill, the darker Get template button, tag dots and the bar's icon square
#9D0AFBElectric violet media panels and the hero triangle
Lines & effects
#34353C · 70%1px rules under the nav, between table rows, outlined tags
Typography
THICCCBOI · display-hero · shown in Poppins (fallback)
The quick brown fox jumpsCraft a slick site with us. 87px · 600 · 0.9 · -2px
THICCCBOI · headline-xl · shown in Poppins (fallback)
The quick brown fox jumpsLarge feature title (Accomplish more in less time). 60px · 600 · 1.0
THICCCBOI · body-xl · shown in Poppins (fallback)
The quick brown fox jumpsHero lead. 24px · 500 · 1.1
THICCCBOI · title-sm · shown in Poppins (fallback)
The quick brown fox jumpsTestimonial names, pricing headers. 18px · 600 · 1.11
THICCCBOI · label-lg · shown in Poppins (fallback)
The quick brown fox jumpsNav links, buttons. 17px · 600 · 1.2
THICCCBOI · caption · shown in Poppins (fallback)
The quick brown fox jumpsAnnouncement text, outlined tags. 14px · 600 · 1.43
Spacing & shape
| Purpose | Value |
|---|---|
| Container | 1200px max, centred, with 820px and 740px narrow columns for centred intros |
| Section rhythm | 100px top and bottom with 5% side padding (72px at 1440px) |
| Breakpoints | Webflow's defaults, 991px, 767px and 479px (no CSS file was available to confirm the rules) |
Spacing scale
| Token | Value | Preview |
|---|---|---|
xs | 8px | |
sm | 16px | |
md | 20px | |
lg | 30px | |
xl | 60px | |
2xl | 70px | |
3xl | 100px |
Layout spacing
| Token | Value | Preview |
|---|---|---|
section-cta | 70px | |
gutter | 72px | |
section | 100px |
Border radius
Surfaces
How the surfaces stack, from the page background up. Hex codes and roles are in Colors above.
Motion
| Scroll reveal | opacity 0 → 1, 500ms ease |
| Page load | opacity 0 → 1, 1000ms outQuart |
| Mouse parallax | Hero triangles and portrait drift x/y ±5–10px over 500ms |
| Scroll parallax | One pair of actions moves an element y ±80px over 500ms while in view |
| Tabs | Panel swap with display toggles and a 300ms ease opacity fade |
| Buttons | transition: 0.3s |
| Background swap | background-color 0.2s cubic-bezier(0.645, 0.045, 0.355, 1) |
| Dropdown arrow | Rotates over 300ms ease |
Do’s and don’ts
- Keep the page on canvas #12141D and step up with #34353C at 30% and 59%.
- Open each section with a blue section-tag (#3C5CCF, 6px radius, dot) and a white headline-lg title.
- Use #3C5CCF for buttons (#223EA3 only for the darker Get template variant), with 6px corners and 50px height.
- Set paragraphs at white 70% and links and table values at white 50%.
- Put people on flat violet or coral triangles, cut out, and let the hero portrait bleed off the edge.
- Use THICCCBOI 600 for headlines and most UI text.
- Use violet #9D0AFB for buttons or text; it is for imagery panels and shapes.
- Round buttons into pills; pills are only for the tab switcher.
- Use ink-faint (white at 40%, about 3.9:1 on the canvas) below 14px or for paragraphs; keep it for roles and meta labels.
- Set blue #3C5CCF as text on the canvas (about 3.2:1); use it for fills and 40px+ icons only.
- Add visible drop shadows or borders around cards; depth is tonal.
- Rely on the 40% placeholder on #34353C (about 2.5:1) as a label; add a visible label for real forms.
- Mix in a second typeface or uppercase labels.
Example prompt
Any page in the Startuify style
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Get All AccessUpgrade to All AccessHow to use the Startuify design system
Pick a file to see what it’s for and where it goes.
What it is
The whole design system in one markdown file, written for AI: every color, type style, spacing value, component and motion rule, plus do's, don'ts and a ready prompt.
Best for
Claude, ChatGPT, Gemini, Cursor and v0, or any other AI tool that builds pages or code.
How to use it
- Put
DESIGN.mdin your project and mention it in your request, or save it as.cursor/rules/startuify.mdc - For the rule file, start it with a front-matter block that sets
alwaysApply: true, so every chat uses it - Ask: “Build a pricing page using DESIGN.md.” Cursor follows the colors, fonts, spacing and rules
- Put
DESIGN.mdin the project root - Add one line to
CLAUDE.md: “Follow DESIGN.md for all UI.” - Ask for any page or component; Claude reads the file first
- Attach
DESIGN.mdto the chat (or paste it in) - Ask: “Build a landing page in this design system.”
- Keep the file in the chat or project knowledge, so follow-up pages stay on style
What it is
Every token as data, in the W3C Design Tokens format: colors with their roles, type styles, radius, spacing, and component tokens that point at them.
Best for
Figma (Tokens Studio), Style Dictionary and other design-token tools, and build scripts.
How to use it
- In Figma, open Tokens Studio, choose Import, and pick
tokens.json - Or point Style Dictionary’s
sourceat it to generate tokens for any platform - In code, import it like any JSON file
What it is
A Tailwind CSS v4 theme: every color, font, type style, radius and spacing value becomes a Tailwind utility, like bg-canvas, text-headline-lg or rounded-md.
Best for
Tailwind v4 projects, and AI builders that write Tailwind (v0, Lovable, Bolt).
How to use it
- Save
theme.cssnext to your main CSS file - Import it after Tailwind:
@import "tailwindcss"; @import "./theme.css"; - Use the classes:
bg-canvas text-ink rounded-md p-lg
What it is
The same tokens as plain CSS variables on :root. Component values point at the color variables, so changing one color updates everything that uses it.
Best for
Any website: plain CSS, Webflow custom code, Framer, WordPress.
How to use it
- Add it to your stylesheet, or in Webflow paste it into Site settings → Custom code inside a
<style>tag - Use the variables anywhere:
color: var(--color-ink) - Change a token once and every place that uses it follows