# Node.js

> `nodejs@1.0.0`

Node.js is the open-source, cross-platform JavaScript runtime built on V8 — the foundation of server-side JavaScript, modern build tooling, and a substantial fraction of the web's infrastructure. Stewarded today by the OpenJS Foundation, the brand voice is community-led and infrastructural: stable, long-term, ECMAScript-tracking. The visual identity is the hexagon mark in Node Green (#5FA04E post-2024 refresh), with the historic green (#339933) preserved for legacy surfaces.


**Tags:** `nodejs`, `javascript`, `runtime`, `server`, `green`, `open-source`, `openjs`

## Atoms

### Palette

**Node.js** · `nodejs@1.0.0` · MIT

> Node.js brand palette anchored on Node Green (#5FA04E), the signature green of the hexagon mark following the 2024 brand refresh. The historic green (#339933) and Foundation-PDF Node Green (#68A063) are preserved as supporting tones. The full palette also includes Dark Green (#006837) and Light Green (#39B54A) from the original Node.js Foundation Visual Identity Guidelines, and a neutral set for light and dark canvases. 

### Fonts

| Role | Font | License | Classification |
|------|------|---------|----------------|
| `heading` | **Inter** `(inter@1.0.0)` | OFL-1.1 | sans-serif |
| `body` | **Inter** `(inter@1.0.0)` | OFL-1.1 | sans-serif |
| `mono` | **Source Code Pro** `(source-code-pro@1.0.0)` | OFL-1.1 | monospace |

## Swatches

| ID | Name | Value |
|----|------|-------|
| `node-green` | Node Green | `#5FA04E` |
| `node-green-classic` | Node Green Classic | `#339933` |
| `node-green-foundation` | Node Green Foundation | `#68A063` |
| `node-dark-green` | Node Dark Green | `#006837` |
| `node-light-green` | Node Light Green | `#39B54A` |
| `node-black` | Node Black | `#000000` |
| `node-charcoal` | Node Charcoal | `#1C1C1C` |
| `node-gray` | Node Gray | `#666666` |
| `node-light-gray` | Node Light Gray | `#D5D5D5` |
| `node-off-white` | Node Off-White | `#F4F4F4` |
| `node-white` | Node White | `#FFFFFF` |

## Mode role mappings

### Light mode

| Role | Swatch | Hex |
|------|--------|-----|
| `background` | `node-white` | `#FFFFFF` |
| `surface` | `node-off-white` | `#F4F4F4` |
| `surface-elevated` | `node-white` | `#FFFFFF` |
| `text-primary` | `node-black` | `#000000` |
| `text-secondary` | `node-gray` | `#666666` |
| `text-tertiary` | `node-dark-green` | `#006837` |
| `primary` | `node-green` | `#5FA04E` |
| `primary-hover` | `node-dark-green` | `#006837` |
| `accent` | `node-light-green` | `#39B54A` |
| `accent-hover` | `node-green` | `#5FA04E` |
| `warning` | `node-light-green` | `#39B54A` |
| `warning-hover` | `node-green` | `#5FA04E` |
| `error` | `node-dark-green` | `#006837` |
| `success` | `node-green` | `#5FA04E` |

### Dark mode

| Role | Swatch | Hex |
|------|--------|-----|
| `background` | `node-charcoal` | `#1C1C1C` |
| `surface` | `node-black` | `#000000` |
| `surface-elevated` | `node-charcoal` | `#1C1C1C` |
| `text-primary` | `node-white` | `#FFFFFF` |
| `text-secondary` | `node-light-gray` | `#D5D5D5` |
| `text-tertiary` | `node-light-green` | `#39B54A` |
| `primary` | `node-light-green` | `#39B54A` |
| `primary-hover` | `node-green` | `#5FA04E` |
| `accent` | `node-green` | `#5FA04E` |
| `accent-hover` | `node-light-green` | `#39B54A` |
| `warning` | `node-light-green` | `#39B54A` |
| `warning-hover` | `node-green` | `#5FA04E` |
| `error` | `node-dark-green` | `#006837` |
| `success` | `node-green` | `#5FA04E` |

## Brand semantic roles

### Colors

| Role | Swatch | Hex |
|------|--------|-----|
| `identity` | `node-green` | `#5FA04E` |
| `on-identity` | `node-white` | `#FFFFFF` |
| `primary` | `node-green` | `#5FA04E` |
| `primary-hover` | `node-dark-green` | `#006837` |
| `accent` | `node-light-green` | `#39B54A` |
| `accent-hover` | `node-green` | `#5FA04E` |
| `background` | `node-white` | `#FFFFFF` |
| `surface` | `node-off-white` | `#F4F4F4` |
| `text-primary` | `node-black` | `#000000` |
| `text-secondary` | `node-gray` | `#666666` |

### Typography

| Role | Font role key |
|------|---------------|
| `display` | `heading` |
| `prose` | `body` |
| `code` | `mono` |

## Rules

### 🛑 error (4)

#### `forbiddenTreatment` → `logo`

- **treatments:** hexagon-shape-modified, stretched, rotated, recolored, gradient-fill, drop-shadow, on-busy-photo

> The Node.js hexagon mark is the brand's signature shape; altering its geometry, gradient-filling it, or recoloring it outside the documented green range violates the Foundation Visual Identity Guidelines. 

#### `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. The Foundation Guidelines designate Black as the canonical body-text color on White. 

#### `accessibilityRequirement` → `*`

- **standard:** `WCAG-AA`
- **criterion:** `1.4.3`

> WCAG 2.1 Success Criterion 1.4.3 (Contrast Minimum) — Level AA. Node.js's Foundation Guidelines pair Node Green with Black and White to satisfy AA; consumers must not derive intermediate stops that defeat that property. 

#### `contextRestriction` → `trademark.use`

- **forbiddenContexts:** product-name-prefix, implied-endorsement

> The OpenJS Foundation Trademark Policy forbids product names that imply OpenJS or Node.js endorsement. Use the mark to indicate compatibility, not as part of a product identity. 

### ⚠️ warning (3)

#### `colorChoice` → `roles.colors.identity`

- **allowed:** node-green, node-green-classic, node-green-foundation
- **forbidden:** node-light-green, node-dark-green

> Node.js maintains three legitimate "Node Green" values — the post-2024 refresh (#5FA04E), the historic mark (#339933), and the Foundation PDF (#68A063). Light Green and Dark Green are supporting tones from the Foundation Guidelines and must not stand in as the primary mark fill. 

#### `variantSelection` → `roles.colors.identity`

- **use:** `node-green`
- **when:** `mode="current"`

> The current published Node.js mark (post-2024 refresh) uses #5FA04E. Choose this value for net-new surfaces; preserve #339933 only when matching legacy badges or community-distributed assets. 

#### `contrastRatio` → `roles.colors.primary`

- **against:** `background`
- **minRatio:** `3`
- **standard:** `WCAG-AA-large`

> Node Green (#5FA04E) on White sits around 3.4:1 — clears AA-large for headlines but does NOT clear AA for body text. Reserve Node Green for large display, mark fills, and accents; use Node Dark Green (#006837) for body-text-weight foreground. 

### 💡 recommendation (2)

#### `fontPairing` → `typography.heading`

- **requires:** `body`
- **minSizeRatio:** `1.5`

> nodejs.org uses a single humanist sans for heading and body. Maintain at least a 1.5× heading-to-body ratio to preserve hierarchy. 

#### `compositionConstraint` → `roles.colors.identity`

- **pairsWith:** node-black, node-white, node-dark-green

> The Foundation Guidelines pair Node Green canonically with Black and White; Dark Green appears for shadowed mark variants. Other pairings depart from the documented identity. 

## Provenance

- **Source:** <https://nodejs.org/static/documents/foundation-visual-guidelines.pdf>
- **License:** `MIT`
- **Attribution:** Node.js is MIT-licensed and stewarded by the OpenJS Foundation. The Node.js hexagon mark and word mark are trademarks of the OpenJS Foundation. Brand colors documented here are drawn from the Node.js Foundation Visual Identity Guidelines PDF (nodejs.org/static/documents/ foundation-visual-guidelines.pdf) and supplemented by the post-2024 refresh Node Green (#5FA04E) used on the current nodejs.org logo and verified against the simple-icons project. This atom is brand-atoms' machine-readable encoding; no logos are bundled. 
- **Imported:** `2026-05-18`
- **Notes:** The Foundation Visual Identity Guidelines PDF publishes Node Green at #68A063 (PANTONE 7741 C). The current nodejs.org logo uses a refreshed Node Green at #5FA04E. Both values appear in this atom's palette; #5FA04E is the primary role mapping per the current published mark. Typography in the original guidelines is "Open Sans equivalent" — Open Sans is not in the brand-atoms catalog; this atom uses Inter as the catalog-equivalent humanist sans. 

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*Generated by the brand-atoms converter. Source: `nodejs@1.0.0` from the encyclopedia.*