Sitepeel
docker.com homepage as measured on October 21, 2026

DESIGN.md · measured October 21, 2026

Docker design system

Light interface measured from docker.com: Repro type with Inter, vivid blue accents, tonal surfaces and 18px corners.

Background
#F9FAFB
Primary
#2560FF
Type
Repro
Corners
18px
Download DESIGN.md

From docker.com ↗ · 289 elements at 1440×900 and 390×844 · Independent analysis, not affiliated with Docker

Docker colors

18 roles measured on the page, grouped by where each color is used.

Surfaces

Snow#F9FAFBbackground · --backgroundColorPage background · 6×
White#FFFFFFsurface-container-low · --eyebrowColorRaised areas one step from the page · 7×
Mist#F0F0F0surface-containerCards and panels · 1×
Cool Silver#D6DCE6surface-container-highHover and pressed fills · 1×
White 12%#FFFFFF1FoverlayTranslucent fill for cards and controls · 2×

Text

Deep Blue#2C333Fon-surface · --labelColorPrimary text and headings · 58×
Near Black#000000on-surface-strong · --menuLinkLabelColorHeadings and emphasis · 11×
Dark Blue#475569on-surface-variantSecondary text · 4×
Blue#94A3B8on-surface-mutedMuted text and metadata · 7×
White#FFFFFFon-primaryText and icons on primary

Accents

Vivid Blue#2560FFprimary · --menuLinkButtonColorPrimary buttons and calls to action · 12×
Deep Indigo#00084DsecondaryBrand color in the header · 43×
Vivid Blue#1D63EDtertiarySecondary buttons · 43×

Borders

Cool Mist#E7EAEFoutline · --codeBoxBackgroundColorBorders and dividers · 4×
Deep Blue 7%#0F172A12outline-variantSecondary dividers · 3×

Status

Teal#34D399successSuccess and positive states · 8×
Vivid Red#EF4444errorErrors and destructive states · 2×
Vivid Amber#FFBD2EwarningWarnings and highlights · 1×

Gradients

Docker fonts

4 families.

AaReproWeights 500Repro, Helvetica, Arial, sans-serif
AaInterWeights 400, 500, 600Inter, -apple-system, BlinkMacSystemFont, Segoe UI
AaABC ReproWeights 600ABC Repro, -apple-system, BlinkMacSystemFont, Inter
Aaui-monospaceMonospace · Weights 400ui-monospace, SFMono-Regular, SF Mono, Menlo
headline-displayPage title (h1)Docker64px · 500 · 1.05 · -0.03em
mobile 36px
headline-lgSection headings (h2)The quick brown fox jumps over the lazy dog60px · 500 · 1 · -0.025em
headline-mdSub-section headingsThe quick brown fox jumps over the lazy dog22px · 500 · 1.25 · -0.012em
headline-smCard and feature titlesThe quick brown fox jumps over the lazy dog20px · 500 · 1.5 · -0.013em
body-mdBody textThe quick brown fox jumps over the lazy dog16px · 400 · 1.5
body-lgLead paragraphsThe quick brown fox jumps over the lazy dog19px · 600 · 1.3 · -0.012em
body-smSecondary and small textThe quick brown fox jumps over the lazy dog14px · 400 · 1 · -0.011em
captionCaptions and fine printThe quick brown fox jumps over the lazy dog12px · 400 · 1.3 · -0.012em
label-lgLarge buttons and tabsThe quick brown fox jumps over the lazy dog14px · 500 · 1.3 · -0.011em
label-mdButtons, navigation and labelsThe quick brown fox jumps over the lazy dog13px · 600 · 1.2 · 0.01em
label-smSmall labels and badgesThe quick brown fox jumps over the lazy dog12px · 500 · 1.3 · -0.012em
codeCode and technical valuesconst ready = true;12.5px · 400 · 1.5

Contrast

Text on #F9FAFB

AaAAA12.2:1
AaAAA20.1:1
AaAAA7.3:1
AaLarge only2.5:1

Spacing

No strict grid · 80% are multiples of 4px

xs3.5px
sm8px
md12px
lg20px
xl40px
gutter8px

Breakpoints: 400px 425px 426px 500px 550px 767px 768px 769px 896px 900px

Shapes

Corner radii, most used first.

xl18px · 28×
sm2px · 24×
full9999px · 12×
md4px · 8×
lg8px · 8×

Depth

Shadow
Inset
Inset

Components

Rebuilt from the measured CSS.

Buy now
button-primaryFilled button
Get started
button-outlineOutlined button
Reject All
button-secondaryFilled button
Card
cardCard
Inline link
linkInline link

Motion

Interface transitions

0.25s0.3s0.1s
easecubic-bezier(0.4, 0, 0.2, 1)

Do’s and don’ts

Rules written from the measurements, so a coding agent stays on style.

  • Use #F9FAFB for the page and lift surfaces in small steps: #FFFFFF, #F0F0F0, #D6DCE6.
  • Keep text in 4 levels: #2C333F, #000000, #475569, #94A3B8.
  • Reserve #2560FF for primary actions and key highlights.
  • Set headlines in Repro with tight tracking (-0.03em).
  • Reuse the measured spacing steps (8px, 12px, 20px).
  • Use 18px corners on most elements; larger surfaces also use 2px, 4px and 8px.
  • Use #94A3B8 for body text; it reaches 2.5:1 on #F9FAFB. Keep it for large text or metadata.
  • Introduce new font families beyond Repro, Inter, ABC Repro and ui-monospace.
  • Use #2560FF for large backgrounds or body text.
  • Make interface transitions slower than 0.3s.
DESIGN.md254 lines

What you can build with it

Landing pages, pricing tables, dashboards: your AI coding agent builds them in this style, with these colors, fonts, spacing and buttons instead of its defaults.

Download DESIGN.md, put it in your project’s root folder, then ask your agent for a page.

Prompt · DESIGN.md attached

Build a landing page for my product. Follow for every color, font, spacing value, corner and button.

Need more than one page?

Design MD in the Sitepeel tools for Chrome measures pages behind a login, combines several pages into one file and works on any site you open.

Explore the tool

FAQ

Questions

What can I build with the Docker DESIGN.md?

Any page or component in this style: a landing page, pricing table, dashboard or sign-up form. Your AI coding agent uses the measured colors, Repro type, spacing, corners and buttons instead of its own defaults.

How do I use it with Claude Code or Cursor?

Download the file and put it in your project’s root folder, then ask your agent to follow DESIGN.md. Step-by-step guides: Claude Code, Cursor, Codex, GitHub Copilot.

Is this Docker’s official design system?

No. Sitepeel measured it from docker.com’s public page on October 21, 2026. It is an independent analysis, not made or approved by Docker.

Can I use Docker’s style in my own product?

Use it to learn, prototype and compare. For a real product, make the style your own, and never copy Docker’s logo, name, pictures or text.

How accurate are the values?

Each value was measured on the rendered page after it fully loaded, on desktop and mobile: colors where they appear, type with tracking, spacing, corners, shadows and hover states. Sites change, so check the date at the top.