# GitHub Black (#181717)

A brand color — neutral, dark, luxury, bold. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#181717`
- RGB: rgb(24, 23, 23)
- HSL: hsl(0, 2%, 9%)
- OKLCH: oklch(0.206 0.002 17.3)
- Relative luminance: 0.0087
- Name: GitHub Black (`github-black`, source: brand, brand: github)
- Moods: neutral, dark, luxury, bold
- Page: https://brandsweets.com/colors/github-black

## Tints & shades

- Tints (toward white): #2f2d2d, #464343, #5e5a5a, #757070, #8c8787, #a09c9c, #b7b4b4, #cdcbcb, #e4e2e2, #fafafa
- Shades (toward black): #171616, #151414, #151414, #121111, #121111, #100f0f, #100f0f, #0d0c0c, #0d0c0c, #0a0a0a

## Harmonies

- Complementary: #161717
- Analogous: #171617, #171716
- Triadic: #161716, #161617
- Split-complementary: #161717, #161717
- Tetradic: #171716, #161717, #171617

## Contrast (WCAG 2.x, as text)

- On white (#ffffff): 17.89:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.17:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #7a7575 (4.63:1); AA: background → #808080 (4.53:1); AAA: text → #999494 (7.02:1); AAA: background → #a3a3a3 (7.09:1)

## Brands using this color

- **GitHub** — primary #181717 — https://brandsweets.com/colors/brands/github
- **Next.js** — text #171717 (Δ 0.195) — https://brandsweets.com/colors/brands/nextjs-org
- **Airtable** — text #161616 (Δ 0.579) — https://brandsweets.com/colors/brands/airtable-com
- **CircleCI** — text #161616 (Δ 0.579) — https://brandsweets.com/colors/brands/circleci-com
- **Notion** — primary #191919 (Δ 0.782) — https://brandsweets.com/colors/brands/notion
- **Retool** — text #151515 (Δ 1.016) — https://brandsweets.com/colors/brands/retool-com
- **JetBrains** — text #19191c (Δ 1.081) — https://brandsweets.com/colors/brands/jetbrains-com
- **Netlify** — text #181a1c (Δ 1.233) — https://brandsweets.com/colors/brands/netlify-com
- **Spline** — text #191a1d (Δ 1.391) — https://brandsweets.com/colors/brands/spline-design
- **Runway** — primary #141414 (Δ 1.46) — https://brandsweets.com/colors/brands/runwayml-com
- **Anthropic** — text #141413 (Δ 1.514) — https://brandsweets.com/colors/brands/anthropic
- **N26** — text #1b1b1b (Δ 1.644) — https://brandsweets.com/colors/brands/n26-com
- **Vimeo** — text #141a20 (Δ 1.816) — https://brandsweets.com/colors/brands/vimeo-com

## Curated palettes containing it

- **Newsprint** (editorial, muted, warm) — #b91c1c, #78716c, #d97706, #f5f1ea, #1c1917 — Ink-black on warm paper with a single red — the broadsheet hierarchy that lets typography lead. — tool: https://brandsweets.com/palettes/new/b91c1c-78716c-d97706-f5f1ea-1c1917 — collection: https://brandsweets.com/palettes/editorial
- **Gallery** (editorial, minimal, light) — #171717, #737373, #c2410c, #ffffff — Near-monochrome with one burnt-orange highlight — an art director's default because it never competes with the work. — tool: https://brandsweets.com/palettes/new/171717-737373-c2410c-ffffff — collection: https://brandsweets.com/palettes/editorial
- **Ink & Paper** (minimal, editorial, clean) — #1b1b1b, #6e6e6e, #1e40af, #fcfbf7 — Two greys and one ink-blue link color: the palette of a well-set book page. — tool: https://brandsweets.com/palettes/new/1b1b1b-6e6e6e-1e40af-fcfbf7 — collection: https://brandsweets.com/palettes/minimal
- **Console Light** (technical, clean, light) — #2563eb, #52525b, #16a34a, #fafafa, #18181b — A sober docs palette: one blue for interactive, one green for success, zinc greys for everything else. — tool: https://brandsweets.com/palettes/new/2563eb-52525b-16a34a-fafafa-18181b — collection: https://brandsweets.com/palettes/technical
- **Graphite** (technical, muted, dark, modern) — #a1a1aa, #71717a, #f59e0b, #18181b, #f4f4f5 — A greyscale system with a single amber — the accent does all the work, so allow one per screen. — tool: https://brandsweets.com/palettes/new/a1a1aa-71717a-f59e0b-18181b-f4f4f5 — collection: https://brandsweets.com/palettes/technical
- **Launch Orange** (bold, warm, vivid, modern) — #ea580c, #1c1917, #0891b2, #ffffff — Orange is the rarest SaaS primary, which is exactly why it stands out on a pricing page; cyan keeps it from feeling like a hardware store. — tool: https://brandsweets.com/palettes/new/ea580c-1c1917-0891b2-ffffff — collection: https://brandsweets.com/palettes/bold
- **Coffee Bar** (dark, warm, luxury) — #c58b4a, #8a6a55, #e5c48a, #1e1512, #f3e9dd — Espresso and caramel: a dark-roast palette that photographs latte art beautifully. — tool: https://brandsweets.com/palettes/new/c58b4a-8a6a55-e5c48a-1e1512-f3e9dd — collection: https://brandsweets.com/palettes/dark
- **Atelier** (elegant, minimal, luxury) — #141414, #8c8680, #9c7a4a, #f6f4f0 — Black on bone with a whisper of gold: the runway default that lets garments carry the color. — tool: https://brandsweets.com/palettes/new/141414-8c8680-9c7a4a-f6f4f0 — collection: https://brandsweets.com/palettes/elegant
- **Studio Grey** (minimal, muted, modern) — #1a1a1a, #8c8c8c, #3a86ff, #f2f2f2 — A pure greyscale with a single electric blue — the portfolio palette that makes work look considered. — tool: https://brandsweets.com/palettes/new/1a1a1a-8c8c8c-3a86ff-f2f2f2 — collection: https://brandsweets.com/palettes/minimal

## Fonts for this mood

- neutral: https://brandsweets.com/fonts/mood/neutral
- luxury: https://brandsweets.com/fonts/mood/luxury
- bold: https://brandsweets.com/fonts/mood/bold

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/181717-a2beb0-c859d4-1f2d2b-eaf1e9?lock=0&style=vibrant
(Humans lock/regenerate in the tool; the URL is the state — read `lock=` back to see what they kept.)

## Connect an agent

Point any MCP client at the BrandSweets colors endpoint for the same engine:

- Endpoint: https://mcp.brandsweets.com/colors/mcp
- Tools: `analyze_color` (e.g. `analyze_color({ color: "#181717" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.