W3C Design Tokens
3 filesCross-tool design-token spec (DTCG/W3C). Light + dark mode siblings.
Go
Go (golang) is an open-source programming language that enables the production of simple, efficient, and reliable software at scale. The brand voice is the one the Go Brand Book documents: thoughtful, simple, efficient, reliable, productive, friendly. Gophers communicate concisely, genuinely, friendly, directly, thoughtfully, humbly — never verbose, dubious, exclusive, ambiguous, reactive, or haughty. Visually, the brand is led by Gopher Blue (#00ADD8), supported by Aqua, Fuchsia, Light Blue, Yellow, and Black, with Work Sans for headlines, Roboto for body, and the Go font (Source Code Pro fallback) for source code.
1 palette 3 fonts 0 assets 9 rules
Preview prompt
Use the [email protected] brand from brand-atoms.com.
Fetch https://brand-atoms.com/dist/brands/golang/1.0.0/json/brand.json
and apply its role mappings (primary, accent, identity, etc.),
reference the fonts in references.fonts, and honor every rule where
severity is "error". Surface any deviation you choose to make.Downloads
All converter outputs for [email protected]. Served from
/dist/brands/golang/1.0.0/.
JSON
1 filePlain JSON mirror of the resolved brand — palette, fonts, roles, rules.
CSS variables
1 fileCSS custom properties on :root with prefers-color-scheme dark.
SCSS
1 fileSCSS variables + Sass maps for swatches, roles, and fonts.
Tailwind config
1 fileTailwind v3 theme.extend.colors + fontFamily.
Figma Tokens
1 fileFigma Tokens plugin JSON (Tokens Studio compatible).
Swift
1 fileSwift enums for SwiftUI / UIKit color + font tokens.
Kotlin / Compose
1 fileKotlin objects for Jetpack Compose color + typography tokens.
Markdown guide
1 fileHuman-readable brand guide. Same source as the on-page Brand Guide.
Brand Guide
Inline rendering of the Markdown brand guide. Same source as the
markdown/brand-guide.md download.
Go
Go (golang) is an open-source programming language that enables the production of simple, efficient, and reliable software at scale. The brand voice is the one the Go Brand Book documents: thoughtful, simple, efficient, reliable, productive, friendly. Gophers communicate concisely, genuinely, friendly, directly, thoughtfully, humbly — never verbose, dubious, exclusive, ambiguous, reactive, or haughty. Visually, the brand is led by Gopher Blue (#00ADD8), supported by Aqua, Fuchsia, Light Blue, Yellow, and Black, with Work Sans for headlines, Roboto for body, and the Go font (Source Code Pro fallback) for source code.
Tags: golang, go, programming-language, google, open-source, brand
Atoms
Palette
Go (golang) · [email protected] · CC-BY-3.0
Go language brand palette captured verbatim from the Go Brand Book v1.0. The brand is led by Gopher Blue (#00ADD8) and supported by Light Blue (#5DC9E2) and Fuchsia (#CE3262). Secondary swatches add Aqua (#00A29C), Black, and Yellow (#FDDD00). "More colors" sit below as supporting tones (Dark Blue #00758D, Cool Gray #555759, Plum #402B56, Light Gray #DBD9D6). Black is documented as the high-contrast foundation.
Fonts
| Role | Font | License | Classification |
|---|---|---|---|
heading |
Work Sans ([email protected]) |
OFL-1.1 | sans-serif |
body |
Roboto ([email protected]) |
Apache-2.0 | sans-serif |
mono |
Source Code Pro ([email protected]) |
OFL-1.1 | monospace |
Swatches
| ID | Name | Value |
|---|---|---|
gopher-blue |
Gopher Blue | #00ADD8 |
light-blue |
Light Blue | #5DC9E2 |
fuchsia |
Fuchsia | #CE3262 |
aqua |
Aqua | #00A29C |
go-black |
Black | #000000 |
go-yellow |
Yellow | #FDDD00 |
dark-cyan |
Dark Cyan | #00758D |
cool-gray |
Cool Gray | #555759 |
plum |
Plum | #402B56 |
light-gray |
Light Gray | #DBD9D6 |
go-white |
White | #FFFFFF |
Mode role mappings
Light mode
| Role | Swatch | Hex |
|---|---|---|
background |
go-white |
#FFFFFF |
surface |
light-gray |
#DBD9D6 |
surface-elevated |
go-white |
#FFFFFF |
text-primary |
go-black |
#000000 |
text-secondary |
cool-gray |
#555759 |
text-tertiary |
dark-cyan |
#00758D |
primary |
gopher-blue |
#00ADD8 |
primary-hover |
dark-cyan |
#00758D |
accent |
fuchsia |
#CE3262 |
accent-hover |
plum |
#402B56 |
warning |
go-yellow |
#FDDD00 |
warning-hover |
fuchsia |
#CE3262 |
error |
fuchsia |
#CE3262 |
success |
aqua |
#00A29C |
Dark mode
| Role | Swatch | Hex |
|---|---|---|
background |
go-black |
#000000 |
surface |
plum |
#402B56 |
surface-elevated |
cool-gray |
#555759 |
text-primary |
go-white |
#FFFFFF |
text-secondary |
light-gray |
#DBD9D6 |
text-tertiary |
light-blue |
#5DC9E2 |
primary |
gopher-blue |
#00ADD8 |
primary-hover |
light-blue |
#5DC9E2 |
accent |
fuchsia |
#CE3262 |
accent-hover |
light-blue |
#5DC9E2 |
warning |
go-yellow |
#FDDD00 |
warning-hover |
fuchsia |
#CE3262 |
error |
fuchsia |
#CE3262 |
success |
aqua |
#00A29C |
Brand semantic roles
Colors
| Role | Swatch | Hex |
|---|---|---|
identity |
gopher-blue |
#00ADD8 |
on-identity |
go-white |
#FFFFFF |
primary |
gopher-blue |
#00ADD8 |
primary-hover |
dark-cyan |
#00758D |
accent |
fuchsia |
#CE3262 |
accent-hover |
plum |
#402B56 |
background |
go-white |
#FFFFFF |
surface |
light-gray |
#DBD9D6 |
text-primary |
go-black |
#000000 |
text-secondary |
cool-gray |
#555759 |
Typography
| Role | Font role key |
|---|---|
display |
heading |
prose |
body |
code |
mono |
Rules
🛑 error (5)
forbiddenTreatment → logo
- treatments: stretched, elongated, distorted, recolored, illegible-color, dominant-element, implied-google-endorsement
The Go Brand Book v1.0 §2.0.2 ("Unacceptable logo use") explicitly forbids modifying the Go mark by adding, subtracting, rearranging, stretching, elongating, or distorting it; choosing a color that renders it illegible; using it as the most-prominent element on a page; or using the Go name or logo in a way that implies Google is affiliated with or endorses the consumer's product.
colorChoice → roles.colors.primary
- allowed: gopher-blue
- forbidden: fuchsia, go-yellow, aqua
The Brand Book §2.1 designates Gopher Blue as the lead primary color. Fuchsia, Aqua, and Yellow are documented as secondary / accent roles and must not stand in as the brand identity color.
contrastRatio → text-primary
- against:
background - minRatio:
4.5 - standard:
WCAG-AA
Black on White exceeds 21:1 — well above the WCAG AA threshold for body text.
accessibilityRequirement → *
- standard:
WCAG-AA - criterion:
1.4.3
WCAG 2.1 Success Criterion 1.4.3 (Contrast Minimum) — Level AA. The Brand Book's primary palette pairs are designed around Black-as-foundation; consumers must not derive intermediate stops that defeat AA contrast.
contextRestriction → trademark.use
- forbiddenContexts: product-name-prefix, implied-endorsement
Per the Go Brand and Trademark Usage Guidelines, the Go name and logo must not appear as the most-prominent element of a third-party page or be used in a way that implies Google's affiliation or endorsement.
⚠️ warning (3)
contrastRatio → roles.colors.primary
- against:
background - minRatio:
3 - standard:
WCAG-AA-large
Gopher Blue (#00ADD8) on White sits around 2.6:1 — does NOT clear AA-large for headlines on white. Reserve it for large display contexts or pair with the dark canvas; for body-text foreground use Dark Cyan (#00758D) which clears AA at ~5.6:1.
fontPairing → typography.heading
- requires:
body - minSizeRatio:
1.5
The Brand Book pairs Work Sans (headlines) with Roboto (body). Maintaining at least a 1.5× heading-to-body ratio preserves the documented typographic hierarchy.
enumMembership → typography.heading.fontWeight
- allowed: 500, 600, 700, 800, 900
The Brand Book §2.2 reserves Work Sans Black and Bold for "prominent copy or to emphasize body copy" — heading weights live between Medium (500) and Black (900). The lightest weights (ExtraLight, Thin) are reserved for callouts and large-scale copy over 36pt.
💡 recommendation (1)
compositionConstraint → roles.colors.identity
- pairsWith: go-black, go-white, aqua, light-blue
The Brand Book documents Black as the high-contrast foundation and Aqua / Light Blue as the canonical gradient companions for Gopher Blue. Pair the identity color with these companions to stay consistent with the published voice.
Provenance
- Source: https://go.dev/blog/go-brand
- License:
CC-BY-3.0 - Attribution: The Go gopher and the Go brand are works of Renee French, used under the Creative Commons Attribution 3.0 license per the project's brand guidelines (go.dev/brand). The Go and Go gopher word marks are trademarks of Google LLC. Brand identity values are drawn verbatim from the Go Brand Book v1.0 PDF (go.dev/s/brandbook). This atom is brand-atoms' machine- readable encoding; no logos or wordmarks are bundled here.
- Imported:
2026-05-18 - Notes: The Brand Book designates Work Sans for headlines / subheads and Roboto for body copy. The Go font (Bigelow & Holmes, for source code) is not in the brand-atoms catalog and is not proprietary in the redistribution sense, but the Brand Book explicitly designates Source Code Pro as the fallback — this atom uses Source Code Pro from the catalog as the mono role per the Brand Book's documented fallback path.
Generated by the brand-atoms converter. Source: [email protected] from the encyclopedia.
Components — same template, themed by Go
Every block below renders from the resolved palette + font references on this brand. Swap the brand and the same template re-themes — no per-brand component code required.
Go
A clear hierarchy in Go's typeface
Tertiary heading — supporting structure
Body copy renders in the brand's prose font on the brand's background.
Inline links and highlighted phrases pick up
the brand's primary and highlight roles. Code spans like brand.references.palette
fall back to the monospace face.
A blockquote uses the brand's accent color as its rule. Useful for pulling tagline copy out of running prose.
Bulleted list
- Bullet markers inherit the brand's primary color.
- Item spacing reads as a deliberate vertical rhythm.
- Nested items still resolve to the same primary.
- Second-level item using the accent.
- Third bullet wraps cleanly at narrow widths.
Numbered list
- Open the brand's resolved spec.
- Apply roles to the component template.
- Render the surface in the brand's identity.
- Audit the output against the typed rules.
Callout boxes
Info
Neutral status — provides supplemental context without urgency. Uses the brand's primary as the rule.
Success
Confirms a completed action — palette role success determines the rule color.
Warning
Calls out something that needs attention but isn't an error — palette role warning.
Error
Surfaces a failure that blocks progress — palette role error. Use sparingly.
Table
| Role | Resolves to | Mode |
|---|---|---|
| primary | brand color #1 | light + dark |
| accent | brand color #2 | light + dark |
| warning | brand warning | light + dark |
| error | brand error | light + dark |
Atoms
Brand semantic roles
Brand-level role overrides on top of palette-default mappings. Each role resolves to a concrete swatch or font reference.
Colors
accent
→ fuchsia #CE3262 accent-hover
→ plum #402B56 background
→ go-white #FFFFFF identity
→ gopher-blue #00ADD8 on-identity
→ go-white #FFFFFF primary
→ gopher-blue #00ADD8 primary-hover
→ dark-cyan #00758D surface
→ light-gray #DBD9D6 text-primary
→ go-black #000000 text-secondary
→ cool-gray #555759 Typography
code
→ mono Source Code Pro display
→ heading Work Sans prose
→ body Roboto Palette mode mappings (from golang)
Light mode (14 roles)
accent
→ fuchsia accent-hover
→ plum background
→ go-white error
→ fuchsia primary
→ gopher-blue primary-hover
→ dark-cyan success
→ aqua surface
→ light-gray surface-elevated
→ go-white text-primary
→ go-black text-secondary
→ cool-gray text-tertiary
→ dark-cyan warning
→ go-yellow warning-hover
→ fuchsia Dark mode (14 roles)
accent
→ fuchsia accent-hover
→ light-blue background
→ go-black error
→ fuchsia primary
→ gopher-blue primary-hover
→ light-blue success
→ aqua surface
→ plum surface-elevated
→ cool-gray text-primary
→ go-white text-secondary
→ light-gray text-tertiary
→ light-blue warning
→ go-yellow warning-hover
→ fuchsia Rules (9 typed constraints)
error · 5 rules
forbiddenTreatment logo treatments stretched, elongated, distorted, recolored, illegible-color, dominant-element, implied-google-endorsement The Go Brand Book v1.0 §2.0.2 ("Unacceptable logo use") explicitly forbids modifying the Go mark by adding, subtracting, rearranging, stretching, elongating, or distorting it; choosing a color that renders it illegible; using it as the most-prominent element on a page; or using the Go name or logo in a way that implies Google is affiliated with or endorses the consumer's product.
colorChoice roles.colors.primary allowed gopher-blue forbidden fuchsia, go-yellow, aqua The Brand Book §2.1 designates Gopher Blue as the lead primary color. Fuchsia, Aqua, and Yellow are documented as secondary / accent roles and must not stand in as the brand identity color.
contrastRatio text-primary against background minRatio 4.5 standard WCAG-AA Black on White exceeds 21:1 — well above the WCAG AA threshold for body text.
accessibilityRequirement * standard WCAG-AA criterion 1.4.3 WCAG 2.1 Success Criterion 1.4.3 (Contrast Minimum) — Level AA. The Brand Book's primary palette pairs are designed around Black-as-foundation; consumers must not derive intermediate stops that defeat AA contrast.
contextRestriction trademark.use forbiddenContexts product-name-prefix, implied-endorsement Per the Go Brand and Trademark Usage Guidelines, the Go name and logo must not appear as the most-prominent element of a third-party page or be used in a way that implies Google's affiliation or endorsement.
warning · 3 rules
contrastRatio roles.colors.primary against background minRatio 3 standard WCAG-AA-large Gopher Blue (#00ADD8) on White sits around 2.6:1 — does NOT clear AA-large for headlines on white. Reserve it for large display contexts or pair with the dark canvas; for body-text foreground use Dark Cyan (#00758D) which clears AA at ~5.6:1.
fontPairing typography.heading requires body minSizeRatio 1.5 The Brand Book pairs Work Sans (headlines) with Roboto (body). Maintaining at least a 1.5× heading-to-body ratio preserves the documented typographic hierarchy.
enumMembership typography.heading.fontWeight allowed 500, 600, 700, 800, 900 The Brand Book §2.2 reserves Work Sans Black and Bold for "prominent copy or to emphasize body copy" — heading weights live between Medium (500) and Black (900). The lightest weights (ExtraLight, Thin) are reserved for callouts and large-scale copy over 36pt.
recommendation · 1 rule
compositionConstraint roles.colors.identity pairsWith go-black, go-white, aqua, light-blue The Brand Book documents Black as the high-contrast foundation and Aqua / Light Blue as the canonical gradient companions for Gopher Blue. Pair the identity color with these companions to stay consistent with the published voice.
Provenance
- Source
- https://go.dev/blog/go-brand
- License
CC-BY-3.0- Attribution
- The Go gopher and the Go brand are works of Renee French, used under the Creative Commons Attribution 3.0 license per the project's brand guidelines (go.dev/brand). The Go and Go gopher word marks are trademarks of Google LLC. Brand identity values are drawn verbatim from the Go Brand Book v1.0 PDF (go.dev/s/brandbook). This atom is brand-atoms' machine- readable encoding; no logos or wordmarks are bundled here.
- Imported
2026-05-18- Notes
- The Brand Book designates Work Sans for headlines / subheads and Roboto for body copy. The Go font (Bigelow & Holmes, for source code) is not in the brand-atoms catalog and is not proprietary in the redistribution sense, but the Brand Book explicitly designates Source Code Pro as the fallback — this atom uses Source Code Pro from the catalog as the mono role per the Brand Book's documented fallback path.