Swaleway

A light style preset for a payments and finance product, near-monochrome and restrained in character. Its look rests on 450-weight display type up to 71px, monospace used for labels, metadata or code and a sparing emerald accent on a white canvas. Every value needed to rebuild the look is recorded, from color roles and type steps to spacing, radii and component specs.

Build in this styleRead the build prompt

In the builder, open Gallery under the message and search for Swaleway.

What makes it

• 450-weight display type up to 71px
• monospace used for labels, metadata or code
• square corners on controls (0-2px)
• soft layered shadows on raised cards
• one emerald accent used sparingly
• contrasting full-width bands to break the page rhythm

Colors

Crisp, rational, understated. A white ground, 450-weight display type up to 71px and a sparing emerald accent set the tone.

• canvas / primary action label / text on band#ffffff
• surface#f0f8f9
• text / primary action fill#151515
• muted text#424242
• divider (decorative), never behind text#dcdcdc
• input border#8e8e8e
• accent / link text / focus ring#29735c
• inverse band#0c221d

Every checked pair, measured again

Typefaces

monospace accents in Roboto Mono; no text below 12px; weights of 300 or lighter only at 24px and above; fonts are open Google Fonts chosen to match the observed letterforms

• ManropeHeadings
• InterBody
• Roboto MonoFigures and code

Type scale

Corners and shadows

• cards: 8px
• links: 2px
• pills: 9999px
• inputs: 0px
• buttons: 2px
• navigation-controls: 4px
• shadow-1: rgb(21, 21, 21) 0px 0px 0px 1px inset
• shadow-2: lab(0 0 0 / 0.04) 0px 20px 25px -5px, lab(0 0 0 / 0.04) 0px 8px 10px -6px

Spacing and imagery

comfortable density on a 4px base unit; container 1200px; section gap 48px; card padding 24px; element gap 8px; radii cards 8px, links 2px, pills 9999px, inputs 0px, buttons 2px, navigation-controls 4px; 2 shadow levels

Photography, product screenshots, line icons, data graphics. Use placeholder or generated imagery only; partner marks are neutral placeholders in the muted text color. Product views sit in framed panels with the card radius. Photography is shown under a scrim wherever text overlaps it. Icons are outline style at 20-24px in the text or muted color.

Layout

1. top navigation: wordmark left, 4-6 text links, primary action right; collapses to a menu sheet under 768px
2. centered hero: headline, one-line lede and a primary plus secondary action, visual below
3. feature grid of icon, title and two-line description cells (3-4 columns desktop, 1 column mobile)
4. alternating two-column text-and-visual blocks
5. article or story cards with image, kicker, title and date
6. row of placeholder partner marks in a single muted tone (wraps to two rows on mobile)
7. horizontal card rail with previous/next buttons and snap scrolling
8. newsletter sign-up with a labeled email field
9. metrics band with three or four large figures and captions
10. footer with grouped link columns, legal line and social icons
11. content sits in a 1200px centered container with 24px side padding (16px on mobile)
12. sections are separated by 48px of vertical space on desktop, roughly half that on mobile

Patterns

• hero
• feature grid of icon, title and two-line description cells (3-4 columns desktop, 1 column mobile)
• alternating two-column text-and-visual blocks
• article or story cards with image, kicker, title and date
• row of placeholder partner marks in a single muted tone (wraps to two rows on mobile)
• horizontal card rail with previous/next buttons and snap scrolling
• newsletter sign-up with a labeled email field
• metrics band with three or four large figures and captions

Components

• top navigation bar: colors: canvas #ffffff, text #151515; type 14px; soft shadow
• top navigation bar (variant 2): colors: text #151515; 4px radius; padding 4px 8px; 1px border; type 14px
• primary button: fill #151515, label #ffffff; 4px radius; padding 4px 8px; 1px border; type 14px
• primary button (variant 2): fill #151515, label #ffffff; 2px radius; padding 6px 12px; 1px border; type 14px
• carousel: colors: text #151515, canvas #ffffff; pill radius; 1px border
• feature card: colors: surface #f0f8f9, text #151515, muted text #424242; 8px radius; no shadow
• feature card (variant 2): colors: muted text #424242, canvas #ffffff; 8px radius; no shadow
• pill badge: colors: muted text #424242, text #151515; type 14px
• carousel (variant 2): colors: divider (decorative) #dcdcdc, accent #29735c, canvas #ffffff; type 14px
• text input: colors: canvas #ffffff, text #151515; 0px radius; padding 8px 12px; 1px border; type 16px
• footer: colors: inverse band #0c221d, canvas #ffffff; type 14px

Interactions and states

• opacity and color transitions only, 150ms ease-out
• every interactive element shows a 2px #29735c focus ring with 2px offset
• primary action darkens or lightens by one step on hover and keeps its label color
• card rail scrolls with snap points; previous/next buttons and keyboard arrows move one card
• fields show the focus ring on focus and inline validation on blur
• navigation collapses to a full-height menu sheet under 768px, trapping focus while open
• all motion is disabled under prefers-reduced-motion
• images show a surface-colored placeholder until loaded, with alt text if they fail
• forms: inline validation, disabled submit while sending, success message and retryable error
• mobile menu open and closed states
• hover, focus-visible, active and disabled states for every button style
• reduced-motion variant with no transitions beyond opacity
• rail start and end: previous/next buttons disable at the ends

Guardrails

Experience

• Keep one primary action style (#151515 fill, #ffffff label) and use it once per view; secondary actions stay outlined or text-only.
• Use the emerald accent for small marks only (links, active states, icons), at most two or three times per screen.
• Keep corners square on every control; do not mix in rounded or pill shapes.
• Limit headline sizes to the type scale; the 71px display size appears once per page, in the hero.
• Partner and customer marks are placeholders in one muted tone; never use real company logos.
• Keep copy short and concrete: one idea per section, with a heading that states the benefit.

Accessibility

• Text, links, focus rings and input borders use only the verified pairs listed in contrast checks.
• Focus ring: 2px solid #29735c with 2px offset on every interactive element.
• Body text is 16px or larger at 1.5 line height; nothing is smaller than 12px.
• Decorative colors (dividers and supporting accents) never carry text or the only signal of state.
• The card rail has visible previous/next buttons, is keyboard operable and never auto-advances.
• Text over photos or gradients sits on a scrim that keeps it at 4.5:1 against the lightest area.
• Respect prefers-reduced-motion; no parallax or autoplay video without a pause control.

Security

• Validate every form with a shared zod schema on the client and again in the edge function; reject unknown fields.
• Rate-limit form endpoints per IP and add a honeypot field; store leads in a Supabase table with RLS allowing insert only for anonymous users and select only for staff.
• Set a strict Content-Security-Policy, self-host fonts and icons, and avoid third-party scripts beyond privacy-friendly analytics.
• Open external links with rel="noopener noreferrer" and never put secrets or API keys in client code.
• The marketing site shows no account data and never asks for credentials, seed phrases or keys; sign-in links go to the separate app domain.

Build prompt

The rules every style in the gallery assumes, then this style’s own ten sections, from goal to guardrails. A build in the style also gets its tokens as a file, so the colors and type above are exact.

Copy the rules and build prompt

### How to use these prompts
Paste an entry's build prompt into your coding agent as the first message. Each prompt names its own stack, tokens and acceptance criteria; the rules below apply to all of them and can be prepended once per project.

### Engineering baseline
- TypeScript strict mode, no `any`, small typed components, feature folders, and one source of truth for design tokens (CSS variables consumed by Tailwind).
- Validate every input with a shared zod schema on the client and again on the server or edge function. Never trust client-side checks alone.
- Show loading, empty and error states for every async view. Surface errors in plain language with a retry, and log details to the console in development only.
- Keep secrets out of the bundle. Only publishable keys (for example a Supabase anon key) belong in client code; service-role keys, API keys and webhooks live in server or edge-function environment variables.

### Data and auth baseline
- Enable Row Level Security on every table before inserting data. Default-deny, then add the narrowest policies the feature needs (for a lead form: insert-only for anonymous users, select for a staff role).
- Store roles in a separate table checked by a security-definer function, never in a user-editable profile field.
- Rate-limit public endpoints (forms, auth, AI calls) and add a honeypot field or captcha to anonymous forms.
- Take payments through a hosted checkout and verify webhooks by signature. Never handle raw card data.

### Accessibility and UX baseline
- Target WCAG 2.2 AA: 4.5:1 contrast for normal text and 3:1 for large text, input borders, focus rings and meaningful icons or chart lines. Every palette in this catalog lists its verified pairs; re-check with a contrast tool after any color change.
- Keep body text at 16px or larger with 1.5 line height, nothing below 12px, no light weights under 24px, and uppercase only for short labels.
- Give every interactive element a visible focus ring, full keyboard support, semantic landmarks, labeled form fields, and alt text on meaningful images.
- Respect `prefers-reduced-motion` for every animation. Give carousels and drag interactions keyboard and button alternatives, and never auto-advance them.
- Build mobile-first and test at 375px, 768px and 1280px.

### Content guardrails
- Use original copy, fictional sample data and placeholder or generated imagery. Do not reuse another product's name, logo, screenshots or marketing text.
- Partner and customer logo rows use neutral placeholder marks. Label demo testimonials and metrics as samples. Collect the minimum personal data a form needs.

### Style preset baseline
- Treat the entry's palette, type scale, radii, spacing and shadows as the complete token set. Do not introduce new colors; derive hover and pressed states by moving one step lighter or darker within the same hue, then re-check contrast.
- Colors marked decorative (dividers, supporting accents) never sit behind text and never carry meaning on their own.
- Fonts are open Google Fonts chosen to match the observed letterforms. Self-host them with `font-display: swap` and keep to the listed weights.
- Keep the signature moves listed for the entry, and keep everything else quiet so they stay recognizable.
- One primary action style per view. Secondary actions are outlined or text-only, and links are distinguishable by more than color (underline or weight).

### Goal
Build a responsive light-theme marketing site for a fictional payments and finance product in the "Swaleway" style: near-monochrome and restrained, with 450-weight display type up to 71px, monospace used for labels, metadata or code, square corners on controls (0-2px). Use invented copy and placeholder imagery throughout.

### Stack
Astro, TypeScript, Tailwind CSS, React islands with Radix primitives (tabs, accordion, dialog), Lucide icons, Motion, Embla Carousel, zod, Supabase (form submissions only). Design tokens live as CSS variables and are mapped into the Tailwind theme.

### Pages & layout
Home page sections, in order:
- top navigation: wordmark left, 4-6 text links, primary action right; collapses to a menu sheet under 768px
- centered hero: headline, one-line lede and a primary plus secondary action, visual below
- feature grid of icon, title and two-line description cells (3-4 columns desktop, 1 column mobile)
- alternating two-column text-and-visual blocks
- article or story cards with image, kicker, title and date
- row of placeholder partner marks in a single muted tone (wraps to two rows on mobile)
- horizontal card rail with previous/next buttons and snap scrolling
- newsletter sign-up with a labeled email field
- metrics band with three or four large figures and captions
- footer with grouped link columns, legal line and social icons
- content sits in a 1200px centered container with 24px side padding (16px on mobile)
- sections are separated by 48px of vertical space on desktop, roughly half that on mobile
Also build a simple contact page with a lead form and a 404 page in the same style. Test at 375px, 768px and 1280px.

### Design system
```css
:root {
  --color-canvas: #ffffff;
  --color-surface: #f0f8f9;
  --color-text: #151515;
  --color-muted-text: #424242;
  --color-divider: #dcdcdc;
  --color-input-border: #8e8e8e;
  --color-accent: #29735c;
  --color-inverse-band: #0c221d;
  --text-14: 14px;
  --text-16: 16px;
  --text-21: 21px;
  --text-32: 32px;
  --text-47: 47px;
  --text-71: 71px;
  --radius-cards: 8px;
  --radius-links: 2px;
  --radius-pills: 9999px;
  --radius-inputs: 0px;
  --radius-buttons: 2px;
  --radius-navigation-controls: 4px;
  --space-unit: 4px;
  --container: 1200px;
  --shadow-1: rgb(21, 21, 21) 0px 0px 0px 1px inset;
  --shadow-2: lab(0 0 0 / 0.04) 0px 20px 25px -5px, lab(0 0 0 / 0.04) 0px 8px 10px -6px;
}
```
Display Manrope, body Inter, mono Roboto Mono (Google Fonts, self-hosted, font-display: swap).
Type scale (size/weight/line-height tracking): 14px/330/1.5, 16px/360/1.5, 21px/400/1.3, 32px/400/1.25, 47px/450/1.25, 71px/450/1.1.
Spacing: comfortable density on a 4px base unit; container 1200px; section gap 48px; card padding 24px; element gap 8px; radii cards 8px, links 2px, pills 9999px, inputs 0px, buttons 2px, navigation-controls 4px; 2 shadow levels.
Signature moves: 450-weight display type up to 71px; monospace used for labels, metadata or code; square corners on controls (0-2px); soft layered shadows on raised cards; one emerald accent used sparingly; contrasting full-width bands to break the page rhythm.

### Components & interactions
- **top navigation bar**: colors: canvas #ffffff, text #151515; type 14px; soft shadow
- **top navigation bar (variant 2)**: colors: text #151515; 4px radius; padding 4px 8px; 1px border; type 14px
- **primary button**: fill #151515, label #ffffff; 4px radius; padding 4px 8px; 1px border; type 14px
- **primary button (variant 2)**: fill #151515, label #ffffff; 2px radius; padding 6px 12px; 1px border; type 14px
- **carousel**: colors: text #151515, canvas #ffffff; pill radius; 1px border
- **feature card**: colors: surface #f0f8f9, text #151515, muted text #424242; 8px radius; no shadow
- **feature card (variant 2)**: colors: muted text #424242, canvas #ffffff; 8px radius; no shadow
- **pill badge**: colors: muted text #424242, text #151515; type 14px
- **carousel (variant 2)**: colors: divider (decorative) #dcdcdc, accent #29735c, canvas #ffffff; type 14px
- **text input**: colors: canvas #ffffff, text #151515; 0px radius; padding 8px 12px; 1px border; type 16px
- **footer**: colors: inverse band #0c221d, canvas #ffffff; type 14px
- opacity and color transitions only, 150ms ease-out
- every interactive element shows a 2px #29735c focus ring with 2px offset
- primary action darkens or lightens by one step on hover and keeps its label color
- card rail scrolls with snap points; previous/next buttons and keyboard arrows move one card
- fields show the focus ring on focus and inline validation on blur
- navigation collapses to a full-height menu sheet under 768px, trapping focus while open
- all motion is disabled under prefers-reduced-motion

### Data & state
Content comes from typed local collections: Feature{icon, title, body}, Post{slug, title, kicker, excerpt, coverUrl, publishedAt}, Metric{value, label}, PartnerMark{label, placeholderSvg}, Lead{email, name?, message?, createdAt}. The lead form posts to a Supabase edge function. Handle these states:
- images show a surface-colored placeholder until loaded, with alt text if they fail
- forms: inline validation, disabled submit while sending, success message and retryable error
- mobile menu open and closed states
- hover, focus-visible, active and disabled states for every button style
- reduced-motion variant with no transitions beyond opacity
- rail start and end: previous/next buttons disable at the ends

### Accessibility
- Text, links, focus rings and input borders use only the verified pairs listed in contrast checks.
- Focus ring: 2px solid #29735c with 2px offset on every interactive element.
- Body text is 16px or larger at 1.5 line height; nothing is smaller than 12px.
- Decorative colors (dividers and supporting accents) never carry text or the only signal of state.
- The card rail has visible previous/next buttons, is keyboard operable and never auto-advances.
- Text over photos or gradients sits on a scrim that keeps it at 4.5:1 against the lightest area.
- Respect prefers-reduced-motion; no parallax or autoplay video without a pause control.
Verified contrast: body text on canvas #151515 on #ffffff = 18.26:1; body text on surface #151515 on #f0f8f9 = 16.96:1; muted text on canvas #424242 on #ffffff = 10.05:1; muted text on surface #424242 on #f0f8f9 = 9.33:1; primary action label on fill #ffffff on #151515 = 18.26:1; link text on canvas #29735c on #ffffff = 5.67:1; focus ring on canvas #29735c on #ffffff = 5.67:1; focus ring on surface #29735c on #f0f8f9 = 5.27:1; input border on canvas #8e8e8e on #ffffff = 3.28:1; accent icons and active marks on canvas #29735c on #ffffff = 5.67:1; text on inverse band #ffffff on #0c221d = 16.64:1.

### Security
- Validate every form with a shared zod schema on the client and again in the edge function; reject unknown fields.
- Rate-limit form endpoints per IP and add a honeypot field; store leads in a Supabase table with RLS allowing insert only for anonymous users and select only for staff.
- Set a strict Content-Security-Policy, self-host fonts and icons, and avoid third-party scripts beyond privacy-friendly analytics.
- Open external links with rel="noopener noreferrer" and never put secrets or API keys in client code.
- The marketing site shows no account data and never asks for credentials, seed phrases or keys; sign-in links go to the separate app domain.

### Performance & SEO
- Static generation for every content page; ship no JavaScript to sections that do not need it.
- Images in AVIF/WebP with explicit width and height, lazy-loaded below the fold; preload the hero image and the display font only.
- One h1 per page, descriptive titles and meta descriptions, Open Graph tags with a generated preview image, and a sitemap.
- Target Lighthouse 95+ for performance, accessibility, best practices and SEO.

### Guardrails
- Keep one primary action style (#151515 fill, #ffffff label) and use it once per view; secondary actions stay outlined or text-only.
- Use the emerald accent for small marks only (links, active states, icons), at most two or three times per screen.
- Keep corners square on every control; do not mix in rounded or pill shapes.
- Limit headline sizes to the type scale; the 71px display size appears once per page, in the hero.
- Partner and customer marks are placeholders in one muted tone; never use real company logos.
- Keep copy short and concrete: one idea per section, with a heading that states the benefit.
Acceptance criteria:
- Every color in the build comes from the tokens above and every text pair matches a verified contrast pair.
- The page works with keyboard only, shows a visible focus ring everywhere and passes an automated axe check with no violations.
- No real brand names, logos, product screenshots or copied marketing text appear anywhere.
- Layout holds at 375px with no horizontal scrolling.

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