saas · material · minimal · modern · natural · light

Moss Material.

tonal-surface with a moss-green seed — warm tonal surfaces, full-rounded tonal buttons, Roboto Flex throughout. Calm and grounded.

01 · Preview

The kitchen sink.

Moss.app

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saas · material · minimal

Build with Moss Material.

A complete design system, ready for your AI coding agent. Every primitive, token, and pattern below is generated straight from DESIGN.md — drop the file in your project and ship matching UI in minutes.

Start building →View on GitHub

Featured

Tokens that travel with your prompts.

Active users

12,840

Status

All systems operational

01 · Color

Palette

primary

#1A1C16

secondary

#74786C

tertiary

#406836

neutral

#F8FAEF

surface

#FCFCEF

02 · Typography

Type scale

display

The quick brown fox

h1

A major section heading

h2

A subsection title

body

Body copy in the system's body font.

03 · Buttons

Buttons

PrimarySecondaryOutlineGhostText link →

Disabled

04 · Inputs

Form controls

Email

iris@studio.com

Password

••••••••••••

Bio

Designing for long-form publications. Based in Kyoto.

05 · Choices

Select & toggle

Plan

Starter

Free forever

Pro

$18 / month

Team

$48 / month

Toggles

Public profile

Require two-factor

Auto-accept invites

06 · Tags & badges

Labeling

NeutralAccentSolidWith dot

NEWBETAv2.0LIVE

07 · Cards

Cards

Feature

Editorial rigor

Prose-first token file — decisions live next to their reasoning.

Learn more →

Metric

24,810

▲ +12.4% vs last week

08 · Navigation

Tabs & breadcrumb

Overview

Analytics

Members

Workspace/Projects/Heritage System

09 · Spacing

Spacing scale

Fine micro-scale (1–5px) for pills, editorial scale (12–21px) for the grid.

1px

2px

5px

8px · base

10px

12px

14px

16px

18px

20px

21px

10 · Radius

Border radius scale

The system's own radius tokens — sm for chips and inputs, md for buttons, lg for cards, pill for fully-rounded CTAs.

sm

8px

md

12px

lg

16px

pill

9999px

11 · Elevation

Depth & elevation

00 · Flat

Elevation 00

01 · Low

Elevation 01

02 · Medium

Elevation 02

03 · High

Elevation 03

12 · Data

Charts

Weekly revenue

$48,210

M

T

W

T

F

S

S

Active sessions

2,184

02 · The file

DESIGN.md

markdown

1---
2name: "Moss Material"
3description: "tonal-surface with a moss-green seed — warm tonal surfaces, full-rounded tonal buttons, Roboto Flex throughout. Calm and grounded."
4tags: [saas, material, minimal, modern, natural, light]
5colors:
6  primary:   "#1A1C16"
7  secondary: "#74786C"
8  tertiary:  "#406836"
9  neutral:   "#F8FAEF"
10  surface:   "#FCFCEF"
11typography:
12  display: "Roboto Flex"
13  body:    "Roboto Flex"
14  mono:    "Roboto Mono"
15  scale:
16    hero: "3.5625rem / 1.12 / 400 / -0.015em"
17    h1:   "2rem / 1.25 / 400 / 0"
18    h2:   "1.375rem / 1.27 / 500 / 0"
19    body: "1rem / 1.5 / 400 / 0.015em"
20radius:
21  sm: 8px
22  md: 12px
23  lg: 16px
24  pill: 9999px
25shadows:
26  card:   "0 1px 2px rgba(26, 28, 22, 0.04), 0 1px 3px rgba(26, 28, 22, 0.06)"
27  button: none
28borders:
29  card:    "1px solid rgba(116, 120, 108, 0.20)"
30  divider: "rgba(116, 120, 108, 0.16)"
31buttons:
32  primary:
33    background: #406836
34    color: #FFFFFF
35    border: 1px solid #406836
36    shape: pill
37    padding: 10px 24px
38    font: 500 / 0.875rem / 0.0125em
39  secondary:
40    background: #DAE7CF
41    color: #0F1F08
42    border: 1px solid #DAE7CF
43    shape: pill
44    padding: 10px 24px
45    font: 500 / 0.875rem / 0.0125em
46  outline:
47    background: transparent
48    color: #406836
49    border: 1px solid #74786C
50    shape: pill
51    padding: 9px 22px
52    font: 500 / 0.875rem / 0.0125em
53  ghost:
54    background: transparent
55    color: #406836
56    border: none
57    shape: pill
58    padding: 10px 12px
59    font: 500 / 0.875rem / 0.0125em
60    hover: underline
61charts:
62  variant: line
63  stroke_width: 2
64  gridlines: false
65  highlight: last
66  dot_marker: true
67  axis_color: "#74786C"
68  palette: ["#406836", "#1A1C16", "#74786C"]
69fonts_url: "https://fonts.googleapis.com/css2?family=Roboto+Flex:opsz,wght@8..144,400;8..144,500;8..144,600;8..144,700&family=Roboto+Mono:wght@400;500&display=swap"
70dependencies: ["lucide-react"]
71---
72 
73# Moss Material
74 
75## AI Build Instructions
76 
77> **Read this section before writing any code.** The rules below
78> are non-negotiable. Every value used in the UI must come from this
79> file's frontmatter — never substitute, approximate, or invent new
80> colors, fonts, radii, or shadows. If a value is missing, ask the
81> user before adding one.
82 
83### 1 · Your role
84 
85You are building UI for a project that has adopted **Moss Material** as its
86design system. Treat `DESIGN.md` as the single source of truth.
87Your job is to translate the user's product requirements into
88components and pages that look like they were designed by the same
89person who authored this file.
90 
91### 2 · Token compliance
92 
93- Pull every color, font family, radius, shadow, and spacing value
94  from the frontmatter at the top of this file.
95- Use semantic roles (e.g. `primary`, `accent`, `muted`) — never
96  hard-code hex values that bypass the system.
97- When a token can be expressed as a CSS variable, declare it once
98  in your global stylesheet and reference it everywhere downstream.
99- The Google Fonts `<link>` is provided in the Typography section.
100  Add it to `<head>` before any component renders.
101 
102### 3 · Component recipes
103 
104Use these recipes verbatim when building the corresponding component.
105 
106#### Buttons
107 
108Four variants are defined. Pick one — never blend variants or invent a fifth.
109 
110- **Primary** — pill shape, bg `#406836`, text `#FFFFFF`, border `1px solid #406836`, padding `10px 24px`, weight `500`.
111- **Secondary** — pill shape, bg `#DAE7CF`, text `#0F1F08`, border `1px solid #DAE7CF`, padding `10px 24px`, weight `500`.
112- **Outline** — pill shape, text `#406836`, border `1px solid #74786C`, padding `9px 22px`, weight `500`.
113- **Ghost** — pill shape, text `#406836`, padding `10px 12px`, weight `500`.
114 
115Reach for **primary** as the single dominant CTA per screen.
116**Secondary** for the supporting action. **Outline** for tertiary
117actions in toolbars. **Ghost** for inline links and table actions.
118 
119#### Cards
120 
121- Background: `#FCFCEF`
122- Border: `1px solid rgba(116, 120, 108, 0.20)`
123- Shadow: `0 1px 2px rgba(26, 28, 22, 0.04), 0 1px 3px rgba(26, 28, 22, 0.06)`
124- Radius: `radius.lg` (`16px`)
125- Internal padding: `20px` for compact cards, `24–28px` for content cards.
126 
127#### Charts
128 
129- Bar/line variant: `line`
130- No gridlines — let the bars/lines carry the data.
131- Highlight strategy: `last` — emphasize a single bar/point per chart.
132- Use the declared palette in order: `#406836`, `#1A1C16`, `#74786C`.
133 
134#### Typography pairings
135 
136- **Display (`Roboto Flex`)** — h1, h2, hero headlines, brand wordmarks.
137- **Body (`Roboto Flex`)** — paragraphs, labels, button text, form inputs.
138- **Mono (`Roboto Mono`)** — code, eyebrows, metadata, numerals in tables.
139 
140### 4 · Hard constraints
141 
142Never do any of the following without explicit instruction from the user:
143 
144- Introduce a new color, font, radius, or shadow that isn't declared above.
145- Mix this system with another (e.g. don't paste in Material or Bootstrap defaults).
146- Use generic gradient defaults (purple→blue, peach→pink) — they break the system's voice.
147- Reach for emoji icons. Use a consistent icon library and size icons in line with body type.
148- Add motion that exceeds the system's restraint — keep transitions short (≤200ms) and subtle.
149 
150### 5 · Before you finish — verify
151 
152Run through this checklist for every screen you produce:
153 
154- [ ] Every color used appears in the Colors table above.
155- [ ] Headlines use the display font; body copy uses the body font.
156- [ ] Buttons match one of the declared variants exactly (shape, padding, weight).
157- [ ] Border-radius values come from `radius.sm` / `radius.md` / `radius.lg` / `radius.pill`.
158- [ ] Cards and dividers use the declared border + shadow tokens.
159- [ ] No values were invented; if you needed something missing, you stopped and asked.
160 
161---
162 
163## Overview
164Moss Material applies the tonal-surface spec to a moss-green seed. The full tonal-surface logic — surface, surface-container-low, outline-variant — derived from a calm green primary and warm-neutral tonal palette.
165 
166This is for wellness products, naturalist brands, sustainability tooling, and any tonal-surface product that wants to feel grounded rather than corporate.
167 
168## Color (tonal roles)
169- **on-surface #1A1C16** — primary text on warm tonal neutrals.
170- **outline #74786C** — warm mid-grey for borders, captions.
171- **primary #406836** — the moss-green seed. CTAs, focus rings.
172- **secondary-container #DAE7CF** — tonal button fill.
173- **surface-container-low #F8FAEF** — warm page canvas.
174- **surface #FCFCEF** — base card surface.
175 
176## Typography
177**Roboto Flex** at every level — the canonical face.
178 
179| Role | Size | Weight | tonal-surface token |
180|------|------|--------|----------|
181| Hero | 3.5625rem | 400 | display-large |
182| H1 | 2rem | 400 | headline-large |
183| H2 | 1.375rem | 500 | title-large |
184| Body | 1rem | 400 | body-large |
185 
186## Buttons (tonal variants)
187- **Filled (primary)** — moss-green fill, white label.
188- **Tonal (secondary)** — sage container fill, deep ink label.
189- **Outlined** — transparent with outline-variant border.
190- **Text (ghost)** — bare moss label.
191 
192All full-rounded pills. No drop shadows.
193 
194## Cards
195Surface fill with outline-variant border at 20% + tonal elevation level 1. Radius **16px**.
196 
197## Do's and Don'ts
198- ✅ Full-rounded pills, tonal secondaries, no shadow on buttons.
199- ✅ Warm canvas (#F8FAEF) — never cool-neutral. The warmth carries the moss vibe.
200- ✅ Roboto Flex 400 on display.
201- ❌ No second accent. The moss seed is alone.
202- ❌ No sharp corners. the tonal-surface system is rounded by default.
203- ❌ No serif typography.
204 
205---
206 
207## Tokens
208 
209> Generated from the same source the live preview renders from.
210> Treat the values below as the contract — never substitute approximations.
211 
212### Colors
213 
214| Role      | Value |
215|-----------|-------|
216| primary   | `#1A1C16` |
217| secondary | `#74786C` |
218| tertiary  | `#406836` |
219| neutral   | `#F8FAEF` |
220| surface   | `#FCFCEF` |
221 
222### Typography
223 
224- **Display:** Roboto Flex
225- **Body:** Roboto Flex
226- **Mono:** Roboto Mono
227 
228| Role | size / leading / weight / tracking |
229|------|------------------------------------|
230| Hero | 3.5625rem / 1.12 / 400 / -0.015em |
231| H1   | 2rem / 1.25 / 400 / 0 |
232| H2   | 1.375rem / 1.27 / 500 / 0 |
233| Body | 1rem / 1.5 / 400 / 0.015em |
234 
235### Radius
236 
237- sm: `8px`
238- md: `12px`
239- lg: `16px`
240- pill: `9999px`
241 
242### Shadows
243 
244- **card:** `0 1px 2px rgba(26, 28, 22, 0.04), 0 1px 3px rgba(26, 28, 22, 0.06)`
245- **button:** `none`
246 
247### Borders
248 
249- **card:** `1px solid rgba(116, 120, 108, 0.20)`
250- **divider:** `rgba(116, 120, 108, 0.16)`
251 
252### Buttons
253 
254Four variants, each fully tokenized. The preview renders from these exact values.
255 
256#### Primary
257 
258| Property | Value |
259|----------|-------|
260| shape | `pill` |
261| background | `#406836` |
262| color | `#FFFFFF` |
263| border | `1px solid #406836` |
264| padding | `10px 24px` |
265| fontWeight | `500` |
266| fontSize | `0.875rem` |
267| tracking | `0.0125em` |
268 
269#### Secondary
270 
271| Property | Value |
272|----------|-------|
273| shape | `pill` |
274| background | `#DAE7CF` |
275| color | `#0F1F08` |
276| border | `1px solid #DAE7CF` |
277| padding | `10px 24px` |
278| fontWeight | `500` |
279| fontSize | `0.875rem` |
280| tracking | `0.0125em` |
281 
282#### Outline
283 
284| Property | Value |
285|----------|-------|
286| shape | `pill` |
287| background | `transparent` |
288| color | `#406836` |
289| border | `1px solid #74786C` |
290| padding | `9px 22px` |
291| fontWeight | `500` |
292| fontSize | `0.875rem` |
293| tracking | `0.0125em` |
294 
295#### Ghost
296 
297| Property | Value |
298|----------|-------|
299| shape | `pill` |
300| background | `transparent` |
301| color | `#406836` |
302| border | `none` |
303| padding | `10px 12px` |
304| fontWeight | `500` |
305| fontSize | `0.875rem` |
306| tracking | `0.0125em` |
307| hoverHint | `underline` |
308 
309### Charts
310 
311| Property | Value |
312|----------|-------|
313| variant | `line` |
314| strokeWidth | `2` |
315| gridlines | `false` |
316| highlight | `last` |
317| dotMarker | `true` |
318| axisColor | `#74786C` |
319| palette | `#406836`, `#1A1C16`, `#74786C` |
320

03 · How to use it

Wire it into your agent.

markdown

# CLAUDE.md
 
Reference @DESIGN.md for all styling decisions. Apply tokens strictly — do not introduce colors, fonts, or radii outside the system. When in doubt, prefer the values declared in DESIGN.md frontmatter.

04 · Required setup

Three snippets.

Google Fonts link

html

<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Roboto+Flex:opsz,wght@8..144,400;8..144,500;8..144,600;8..144,700&family=Roboto+Mono:wght@400;500&display=swap" />

Install dependencies

bash

npm install lucide-react

Tailwind config

// tailwind.config.js
export default {
  theme: {
    extend: {
      fontFamily: {
        display: ['"Roboto Flex"', 'serif'],
        sans:    ['"Roboto Flex"', 'sans-serif'],
        mono:    ['"Roboto Mono"', 'monospace'],
      },
      colors: {
        primary:   '#1A1C16',
        secondary: '#74786C',
        accent:    '#406836',
        neutral:   '#F8FAEF',
        surface:   '#FCFCEF',
      },
      borderRadius: {
        sm: '8px',
        md: '12px',
        lg: '16px',
      },
    },
  },
};

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Featured

Tokens that travel with your prompts.

Active users

12,840

Status

All systems operational