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

DESIGN.md · measured October 21, 2026

Datadog design system

Light interface measured from datadoghq.com: NationalWeb type, violet accents, tonal surfaces and 4px corners.

Background
#FFFFFF
Primary
#632CA6
Type
NationalWeb
Corners
4px
Download DESIGN.md

From datadoghq.com ↗ · 360 elements at 1440×900 and 390×844 · Independent analysis, not affiliated with Datadog

Datadog colors

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

Surfaces

White#FFFFFFbackground · --bs-whitePage background · 5×
Snow#F6F6F6surface-container-lowRaised areas one step from the page · 1×
Near Black#000000inverse-surfaceHigh-contrast fills · 1×

Text

Cool Graphite#212529on-surface · --bs-highlight-colorPrimary text and headings · 11×
Slate#555555on-surface-variantSecondary text · 9×
Gray#969696on-surface-mutedMuted text and metadata · 7×
White#FFFFFFon-primaryText and icons on primary

Accents

Violet#632CA6primary · --bs-purplePrimary buttons and calls to action · 6×
Light Blue#9EC5FEsecondaryBrand accent (CSS variable) · 12×

Borders

White 50%#FFFFFF80outlineBorders and dividers · 1×

Gradients

Datadog fonts

One family carries the whole interface.

AaNationalWebWeights 300, 600, 700NationalWeb, Helvetica, Arial, sans-serif
headline-displayPage title (h1)Datadog68px · 600 · 1
mobile 38px
headline-lgSection headings (h2)The quick brown fox jumps over the lazy dog36px · 600 · 1.11
mobile 28px
body-mdBody textThe quick brown fox jumps over the lazy dog14px · 300 · 1.29
body-lgLead paragraphsThe quick brown fox jumps over the lazy dog22px · 300 · 1.43
label-mdButtons, navigation and labelsThe quick brown fox jumps over the lazy dog16px · 700 · 1.25

Contrast

Text on #FFFFFF

AaAAA15.4:1
AaAAA7.5:1
AaLarge only2.96:1

Spacing

No strict grid · 72% are multiples of 4px

xs4px
sm8px
md12px
lg20px
xl48px
gutter8px

Breakpoints: 425px 480px 575.98px 576px 767px 767.98px 768px 991px 991.98px 992px 1199.98px 1200px 1399.98px 1400px

Shapes

Corner radii, most used first.

md4px · 20×
full9999px · 4×

Depth

Shadow

Components

Rebuilt from the measured CSS.

FREE TRIAL
button-primaryFilled button · hover to see the measured hover state
SEE THE PLATFORM
button-outlineOutlined button · hover to see the measured hover state
LEARN MORE
button-ghostOutlined button
Inline link
linkInline link

Motion

Interface transitions

0.2s
ease

Do’s and don’ts

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

  • Use #FFFFFF for the page and lift surfaces in small steps: #F6F6F6.
  • Keep text in 3 levels: #212529, #555555, #969696.
  • Reserve #632CA6 for primary actions and key highlights.
  • Reuse the measured spacing steps (8px, 12px, 20px).
  • Use 4px corners on most elements.
  • Use #969696 for body text; it reaches 3.0:1 on #FFFFFF. Keep it for large text or metadata.
  • Introduce new font families beyond NationalWeb.
  • Use #632CA6 for large backgrounds or body text.
  • Make interface transitions slower than 0.2s.
DESIGN.md177 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 Datadog 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, NationalWeb 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 Datadog’s official design system?

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

Can I use Datadog’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 Datadog’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.