--- version: alpha name: Fastmail description: "Light interface measured from fastmail.com: roca type with Proxima Nova, dark blue accents, tonal surfaces and pill-shaped controls." colors: background: "#FFFFFF" surface: "#FFFFFF" on-surface: "#1B1E20" on-background: "#1B1E20" on-surface-variant: "#5B646C" on-surface-muted: "#ADB1B5" surface-container-low: "#FBF7EF" surface-container: "#F4F5F5" surface-container-high: "#C1C5C8" overlay: "#FFFFFF80" overlay-strong: "#F2F7FB1A" outline: "#D6D8DA" outline-variant: "#FFFFFF1A" primary: "#253859" on-primary: "#FFFFFF" secondary: "#25446A" tertiary: "#0067B9" warning: "#FFC107" typography: headline-display: fontFamily: roca fontSize: 58px fontWeight: 400 lineHeight: 1.11 headline-lg: fontFamily: roca fontSize: 46px fontWeight: 400 lineHeight: 1.1 headline-md: fontFamily: Proxima Nova fontSize: 25.5px fontWeight: 600 lineHeight: 1.4 body-md: fontFamily: Proxima Nova fontSize: 14px fontWeight: 400 lineHeight: 1.43 body-lg: fontFamily: Proxima Nova fontSize: 16px fontWeight: 400 lineHeight: 1.4 body-sm: fontFamily: Proxima Nova fontSize: 12.5px fontWeight: 400 lineHeight: 1.5 label-md: fontFamily: Proxima Nova fontSize: 16px fontWeight: 600 lineHeight: 1.4 headline-display-mobile: fontFamily: roca fontSize: 46.5px fontWeight: 400 lineHeight: 1.12 headline-lg-mobile: fontFamily: roca fontSize: 41.5px fontWeight: 400 lineHeight: 1.1 headline-md-mobile: fontFamily: Proxima Nova fontSize: 23px fontWeight: 600 lineHeight: 1.4 rounded: xs: 8px sm: 12px md: 16px lg: 24px xl: 40px full: 9999px spacing: xs: 4px sm: 8px md: 16px lg: 22.41px xl: 35.86px gutter: 16px section: 125.52px margin: 35.45px container: 1332px components: button-primary: backgroundColor: "{colors.surface-container-high}" textColor: "{colors.tertiary}" typography: "{typography.label-md}" rounded: "{rounded.full}" padding: 4px 12px 4px 4px height: 40px button-primary-hover: backgroundColor: "#CCE0F1" card: backgroundColor: "{colors.background}" textColor: "{colors.on-surface}" typography: "{typography.body-lg}" rounded: "{rounded.lg}" padding: 125.52px 0px 161.38px 0px link: textColor: "#F4F5F7" --- # Fastmail Design System ## Overview Fastmail describes itself as: “Fast, private email hosting for you or your business. More productive, lightning fast, simple and built to save you time.” The interface is light, built on **White (#FFFFFF)** with **Charcoal (#1B1E20)** text, and **Dark Blue (#253859)** as the main accent. Type is set in **roca** and **Proxima Nova**. Headlines run large; body text is 14px. Depth comes from soft drop shadows. Controls are pill-shaped. Measured from [fastmail.com](https://www.fastmail.com/) on October 21, 2026 at 1440×900 and 390×844 from 355 rendered elements. Values are computed styles from the live page, not the original source files. ## Colors The palette has 16 roles, plus gradient stops #0067B9, #296B9F, #243959. - **White (#FFFFFF):** Page background, seen 9 times. Token `background`, CSS `--brand-color-grey-0`. - **Charcoal (#1B1E20):** Primary text and headings, seen 71 times. Token `on-surface`. - **Cool Slate (#5B646C):** Secondary text, seen 3 times. Token `on-surface-variant`. - **Cool Gray (#ADB1B5):** Muted text and metadata, seen 2 times. Token `on-surface-muted`. - **Warm Snow (#FBF7EF):** Raised areas one step from the page, seen 2 times. Token `surface-container-low`. - **Snow (#F4F5F5):** Cards and panels, seen 1 time. Token `surface-container`, CSS `--brand-color-grey-5`. - **Cool Silver (#C1C5C8):** Hover and pressed fills, seen 1 time. Token `surface-container-high`. - **White 50% (#FFFFFF80):** Translucent fill for cards and controls, seen 1 time. Token `overlay`. - **Cool Snow 10% (#F2F7FB1A):** Stronger translucent fill, seen 1 time. Token `overlay-strong`. - **Silver (#D6D8DA):** Borders and dividers, seen 4 times. Token `outline`, CSS `--brand-color-grey-20`. - **White 10% (#FFFFFF1A):** Secondary dividers, seen 1 time. Token `outline-variant`. - **Dark Blue (#253859):** Brand color in logos and imagery, seen 4 times. Token `primary`. - **White (#FFFFFF):** Text and icons on primary. Token `on-primary`. - **Dark Blue (#25446A):** Brand color in logos and imagery, seen 35 times. Token `secondary`. - **Dark Blue (#0067B9):** Brand color in the logo, seen 33 times. Token `tertiary`, CSS `--theme-push-select-fg`. - **Vivid Amber (#FFC107):** Warnings and highlights, seen 2 times. Token `warning`. ## Typography **roca** and **Proxima Nova** share the interface. Fallback stack: `roca, Georgia Roca Fallback, Iowan Old Style, Palatino Linotype`. Other loaded fonts: Georgia Roca Fallback. - **headline-display:** roca 58px at weight 400, line height 1.11 (46.5px on mobile). Page title (h1). - **headline-lg:** roca 46px at weight 400, line height 1.1 (41.5px on mobile). Section headings (h2). - **headline-md:** Proxima Nova 25.5px at weight 600, line height 1.4 (23px on mobile). Sub-section headings. - **body-md:** Proxima Nova 14px at weight 400, line height 1.43. Body text. - **body-lg:** Proxima Nova 16px at weight 400, line height 1.4. Lead paragraphs. - **body-sm:** Proxima Nova 12.5px at weight 400, line height 1.5. Secondary and small text. - **label-md:** Proxima Nova 16px at weight 600, line height 1.4. Buttons, navigation and labels. ## Layout Spacing does not follow a strict grid: 44% of measured values are multiples of 4px, so match the measured steps rather than rounding to a grid. - **Scale:** xs 4px, sm 8px, md 16px, lg 22.41px, xl 35.86px. - **Sections:** 125.52px vertical padding between major sections. - **Gaps:** 16px is the most common gap in flex and grid layouts. - **Container:** content is capped at 1332px. - **Page margin:** 35.45px on each side of full-width sections. ## Elevation & Depth Raised elements use soft drop shadows. The most used recipes: - `rgba(0, 0, 0, 0.1) 0px 10px 15px -3px, rgba(0, 0, 0, 0.1) 0px 4px 6px -4px` - `rgba(0, 0, 0, 0.09) 0px 0px 12px 0px, rgba(0, 0, 0, 0.07) 0px 0px 16px 0px, rgba(0, 0, 0, 0.15) 0px 0px 6px 0px` - `rgba(27, 30, 32, 0.08) 0px 15px 17px -3px, rgba(27, 30, 32, 0.1) 0px 6px 10px -2px, rgba(27, 30, 32, 0.12) 0px 3px 6px -1px, rgba(27, 30, 32, 0.14) 0px 0px 2px 0px` ## Shapes Interactive controls are pill-shaped. Measured radii, most used first: - **full (9999px):** 24 elements. - **md (16px):** 20 elements. - **xs (8px):** 12 elements. - **sm (12px):** 12 elements. - **xl (40px):** 12 elements. - **lg (24px):** 10 elements. ## Components Measured from the rendered page. Token values reference the tokens above. - **button-primary (“Why Fastmail?”):** #C1C5C8 fill, #0067B9 text, 15.9389px/600, 9999px radius, padding 4px 12px 4px 4px, shadow `rgba(0, 0, 0, 0.09) 0px 0px 12px 0px, rgba(0, 0, 0, 0.07) 0px 0px 16px 0px, rgba(0, 0, 0, 0.15) 0px 0px 6px 0px`. - **button-primary-hover:** background #CCE0F1, text #0067B9 on hover. - **card:** #FFFFFF fill, #1B1E20 text, 16px/400, 24px 24px 0px 0px radius, padding 125.52px 0px 161.38px 0px. - **link:** transparent fill, #F4F5F7 text, padding 0px. ## Do's and Don'ts - Do use #FFFFFF for the page and lift surfaces in small steps: #FBF7EF, #F4F5F5, #C1C5C8. - Do keep text in 3 levels: #1B1E20, #5B646C, #ADB1B5. - Do use #253859 as the brand accent: header, logo and key highlights. - Do reuse the measured spacing steps (8px, 16px, 22.41px). - Do make buttons and chips fully rounded (9999px); most other elements use 16px corners. - Don't use #ADB1B5 for body text; it reaches 2.2:1 on #FFFFFF. Keep it for large text or metadata. - Don't introduce new font families beyond roca and Proxima Nova. - Don't use #253859 for large backgrounds or body text. - Don't make interface transitions slower than 0.5s. ## Motion Interface transitions are quick: 0.5s, 0.3s. - **Easing:** `cubic-bezier(0.16, 1, 0.3, 1)`. Generated by [Sitepeel](https://sitepeel.dev/design-md/fastmail.com/), the free DESIGN.md generator.