# #0f172a

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

## Values

- Hex: `#0f172a`
- RGB: rgb(15, 23, 42)
- HSL: hsl(222, 47%, 11%)
- OKLCH: oklch(0.208 0.04 265.8)
- Relative luminance: 0.0088
- Nearest named color: Dark Knight (#151931, Δ 1.84) — https://brandsweets.com/colors/dark-knight
- Moods: cool, dark, luxury, bold, modern
- Page: https://brandsweets.com/colors/0f172a

## Tints & shades

- Tints (toward white): #1b294b, #263a69, #324d8b, #3e5fac, #5677c2, #748fcd, #96aad9, #b8c5e5, #d6def0, #f8f9fc
- Shades (toward black): #0e1525, #0e1525, #0c1322, #0b111e, #0b111e, #090e1a, #080c16, #070a13, #070a13, #05080f

## Harmonies

- Complementary: #29210f
- Analogous: #0f2429, #140f29
- Triadic: #290f17, #17290f
- Split-complementary: #29140f, #24290f
- Tetradic: #290f24, #29210f, #0f2914

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

- On white (#ffffff): 17.85:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.18:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #5374c1 (4.64:1); AA: background → #808080 (4.52:1); AAA: text → #7c95d0 (7.07:1); AAA: background → #a3a3a3 (7.08:1)

## Brands using this color

- **Cohere** — secondary #14142a (Δ 1.263) — https://brandsweets.com/colors/brands/cohere-com
- **Monzo** — text #091723 (Δ 1.738) — https://brandsweets.com/colors/brands/monzo-com

## Curated palettes containing it

- **Blueprint** (technical, cool, modern, dark) — #38bdf8, #818cf8, #fbbf24, #0f172a, #e2e8f0 — Cyan and indigo on navy is the developer-tool look; amber is the only warm note, so it always reads as 'attention'. — tool: https://brandsweets.com/palettes/new/38bdf8-818cf8-fbbf24-0f172a-e2e8f0 — collection: https://brandsweets.com/palettes/technical
- **Indigo SaaS** (modern, cool, clean) — #4f46e5, #6b7280, #10b981, #ffffff, #111827 — The dependable indigo-and-emerald B2B pairing: indigo for primary actions, emerald reserved for success states. — tool: https://brandsweets.com/palettes/new/4f46e5-6b7280-10b981-ffffff-111827 — collection: https://brandsweets.com/palettes/modern
- **Slate Workspace** (minimal, cool, clean, modern) — #0f172a, #64748b, #2563eb, #f8fafc — Slate on slate with a single blue — the productivity-app look where the interface disappears behind the work. — tool: https://brandsweets.com/palettes/new/0f172a-64748b-2563eb-f8fafc — collection: https://brandsweets.com/palettes/minimal
- **Clinic** (clean, cool, light) — #0e7490, #64748b, #f97316, #f8fafc, #0f172a — Teal reads clinical without the coldness of pure blue; the coral accent adds warmth for reassurance moments. — tool: https://brandsweets.com/palettes/new/0e7490-64748b-f97316-f8fafc-0f172a — collection: https://brandsweets.com/palettes/clean
- **Arctic** (clean, cool, minimal) — #0f1b2d, #7d93a8, #0ea5e9, #ffffff — Navy type on white with an ice-blue accent: crisp and corporate without going grey. — tool: https://brandsweets.com/palettes/new/0f1b2d-7d93a8-0ea5e9-ffffff — collection: https://brandsweets.com/palettes/clean
- **Cobalt Pop** (bold, cool, vivid, modern) — #1e40af, #111827, #fb7185, #ffffff — One deep cobalt and one hot pink on white — a two-accent system for launches and campaign pages that need punch. — tool: https://brandsweets.com/palettes/new/1e40af-111827-fb7185-ffffff — collection: https://brandsweets.com/palettes/bold

## Fonts for this mood

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

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/0f172a-9ca3c4-df6e4e-211f2d-e9eff1?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: "#0f172a" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.