Function Health — design system & UI screens

Consumer · 1 screen · 12 sections · https://www.functionhealth.com/

Full-bleed forest-and-hand nature photo hero with a light serif wordmark and an HSA/FSA-eligible badge, closing on 160+ lab tests / Whole body / $1-per-day metric callouts and a Start testing button.

Open in Mozaika →

This is a static, crawlable rendering for search & AI engines. The interactive version — filters, live decode console, copy & export — is at https://mozaika.design/website/function-health.

Decoded design system

Function Health's decoded design system: background #FEF9EF, text #2A2B2F, accent #B05A36, link #B05A36, primary #FEF9EF; type scale h1 80px / h2 64px / body 14px; 4px spacing base; 12px base radius. The single interactive/action color is #B05A36 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Role	Value
bg	`#FEF9EF`
surface	`#F1ECE3`
border	`#DEDAD2`
text	`#2A2B2F`
text_muted	`#7A7977`
primary	`#FEF9EF`
accent	`#B05A36`
link	`#B05A36`
secondary	`#F5EEE1`
button_bg	`#B05A36`
button_text	`#FEF9EF`

Using these colors

Action color #B05A36 — the single interactive color; only on things you click or must notice, never large fills.
accent, link, button_bg are all #B05A36 — one role, not several (the action color).
accent #B05A36 — THE accent / action color — interactive & must-notice only (buttons, links, focus, one key highlight); never large fills or backgrounds. Scarcity is what makes it read as designed.
primary #FEF9EF — a neutral UI color (chips, tags, icon fills, chrome), not the action color (action = #B05A36).
secondary #F5EEE1 — optional secondary accent — LOW decode confidence; use rarely (a status color or a single decorative moment) or omit it entirely. Prefer one accent unless the reference clearly shows two.

Typography

Heading: Financier Display
Body: Arial
Mono: Fragment Mono
h1: 80px
h2: 64px
body: 14px

Spacing

base unit: 4px
scale: 2px, 4px, 8px, 12px, 16px, 20px, 24px, 25px, 32px, 40px

Radii

base: 12px
button: 40px

Shadows (elevation)

subtle: 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
card: rgba(0, 0, 0, 0.1) 0px 4px 30px 0px
overlay: rgba(42, 43, 47, 0.14) 0px 18px 40px 0px

Motion

Micro-interactions run at 180ms (dominant) with ease.

durations: 180ms · 200ms · 240ms
easings: ease · cubic-bezier(0.4, 0, 0.2, 1)
animated properties: opacity, color, background-color, backdrop-filter

Native design tokens

Token	Value
`--beige`	`#FEF9EF`
`--cream`	`#F5EEE1`
`--dark-cream`	`#D1C9BF`
`--light-gray`	`#737373`
`--gray`	`#515151`
`--midnight`	`#2A2B2F`
`--orange`	`#B05A36`
`--green`	`#79BD8B`
`--blue`	`#488AD5`
`--text-04`	`#B05A36`

…and 110 more measured on the page.

Button states (measured)

primary hover: border 1px solid rgb(143, 70, 42)
primary focus: border 1px solid rgb(143, 70, 42) · outline 2px solid rgb(7, 26, 36)

Layout (measured)

container max-width: 1250px
nav: 112px relative

Motion choreography (measured)

Load order: div.tracked_marquee-track×2 → div.logocarousel_track → button.medical-board__nav → button.medical-board__nav → button.medical-board__nav → button.medical-board__nav

Scroll reveal: 7 elements rest at opacity 0, translateY(-4px), animate in over 400ms.

Overlay recipe (measured)

dialog panel: #F5EEE1 · radius 12px

Responsive (measured)

breakpoints: 380px · 480px · 768px · 900px · 960px · 1024px
mobile (390px): hero 57px · nav inline

Full design system, per-section tokens & DESIGN.md / Tailwind / CSS exports →

Screens

Function Health - 100+ Lab Tests, Twice a Year