# #0f152f

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

## Values

- Hex: `#0f152f`
- RGB: rgb(15, 21, 47)
- HSL: hsl(229, 52%, 12%)
- OKLCH: oklch(0.206 0.052 271.4)
- Relative luminance: 0.0084
- Nearest named color: Dark Knight (#151931, Δ 1.808) — https://brandsweets.com/colors/dark-knight
- Moods: cool, dark, luxury, bold, modern
- Page: https://brandsweets.com/colors/0f152f

## Tints & shades

- Tints (toward white): #1a2451, #233270, #2f4193, #384fb2, #5166c8, #7385d3, #92a0dd, #b5bfe8, #d4daf2, #f7f8fd
- Shades (toward black): #0d132b, #0c1127, #0c1127, #0b0f23, #0a0e1f, #090c1b, #070a17, #070a17, #060913, #050710

## Harmonies

- Complementary: #2f290f
- Analogous: #0f242f, #190f2f
- Triadic: #2f0f15, #152f0f
- Split-complementary: #2f190f, #242f0f
- Tetradic: #2f0f24, #2f290f, #0f2f19

## Colors that go with #0f152f

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #0f152f: softer than #000 and cool enough to feel like part of the same palette. Seen in: Asana (https://brandsweets.com/colors/brands/asana-com), Vimeo (https://brandsweets.com/colors/brands/vimeo-com), Audi (https://brandsweets.com/colors/brands/audi-com), Volkswagen (https://brandsweets.com/colors/brands/vw-com). — https://brandsweets.com/colors/charcoal
- **Dark Olive Green** #556b2f [harmony, pool: complementary] — Dark Olive Green sits directly opposite #0f152f on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Cohere (https://brandsweets.com/colors/brands/cohere-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Miro (https://brandsweets.com/colors/brands/miro-com), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre). — https://brandsweets.com/colors/darkolivegreen
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #0f152f — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Asana (https://brandsweets.com/colors/brands/asana-com), Kia (https://brandsweets.com/colors/brands/kia-com), Intel (https://brandsweets.com/colors/brands/intel-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com). — https://brandsweets.com/colors/seagreen
- **Sienna** #a0522d [harmony, pool: split] — Sienna is a split-complement of #0f152f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Oatly (https://brandsweets.com/colors/brands/oatly-com), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), BrandSweets (https://brandsweets.com/colors/brands/brandsweets). — https://brandsweets.com/colors/sienna
- **Slate Blue** #6a5acd [harmony, pool: analogous] — Slate Blue is #0f152f's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Sentry (https://brandsweets.com/colors/brands/sentry-io), Calm (https://brandsweets.com/colors/brands/calm-com), Marvel (https://brandsweets.com/colors/brands/marvel-com). — https://brandsweets.com/colors/slateblue
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #0f152f's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Launch Orange (https://brandsweets.com/palettes/bold#launch-orange), American Express (https://brandsweets.com/colors/brands/americanexpress-com). — https://brandsweets.com/colors/steelblue
- **Amber** #ffbf00 [pool] — Amber is paired with #0f152f in 18 real palettes, including Blueprint and Southwest Airlines's brand system, as the accent. Seen in: Blueprint (https://brandsweets.com/palettes/technical#blueprint), Southwest Airlines (https://brandsweets.com/colors/brands/southwest-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 23 real palettes, including League of Legends's brand system and Monzo's brand system put Blue beside #0f152f, as the supporting colour. Seen in: League of Legends (https://brandsweets.com/colors/brands/leagueoflegends-com), Monzo (https://brandsweets.com/colors/brands/monzo-com), Warp (https://brandsweets.com/colors/brands/warp-dev), MongoDB (https://brandsweets.com/colors/brands/mongodb-com). — https://brandsweets.com/colors/blue

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

- On white (#ffffff): 17.97:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.17:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #5c71cc (4.69:1); AA: background → #808080 (4.55:1); AAA: text → #8393d8 (7.13:1); AAA: background → #a3a3a3 (7.12:1)

## Brands using this color

- **Cohere** — secondary #14142a (Δ 1.265) — https://brandsweets.com/colors/brands/cohere-com
- **Cisco** — primary #07182d (Δ 1.52) — https://brandsweets.com/colors/brands/cisco-com
- **Cisco** — text #07182d (Δ 1.52) — https://brandsweets.com/colors/brands/cisco-com
- **League of Legends** — primary #0a1428 (Δ 1.662) — https://brandsweets.com/colors/brands/leagueoflegends-com
- **League of Legends** — text #0a1428 (Δ 1.662) — https://brandsweets.com/colors/brands/leagueoflegends-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
- **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

## 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/0f152f-9c9fc4-df7e4e-231f2d-e9eef1?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: "#0f152f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.