# #0c253b

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

## Values

- Hex: `#0c253b`
- RGB: rgb(12, 37, 59)
- HSL: hsl(208, 66%, 14%)
- OKLCH: oklch(0.257 0.052 247.9)
- Relative luminance: 0.0172
- Nearest named color: Dark Eclipse (#112244, Δ 2.214) — https://brandsweets.com/colors/dark-eclipse
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/0c253b

## Tints & shades

- Tints (toward white): #133b5d, #1b5383, #2268a5, #2a80cb, #4594d9, #67a7e0, #8dbde8, #afd1ef, #d5e7f6, #f7fafd
- Shades (toward black): #0b2337, #0a2033, #0a1d2f, #091b2a, #081826, #071522, #06131e, #051019, #040d15, #030b11

## Harmonies

- Complementary: #3b220c
- Analogous: #0c3b3a, #0c0e3b
- Triadic: #3b0c25, #253b0c
- Split-complementary: #3b0c0e, #3b3a0c
- Tetradic: #3a0c3b, #3b220c, #0e3b0c

## Colors that go with #0c253b

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 #0c253b: softer than #000 and cool enough to feel like part of the same palette. Seen in: Microsoft (https://brandsweets.com/colors/brands/microsoft-com), Volkswagen (https://brandsweets.com/colors/brands/vw-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #0c253b — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Formula 1 (https://brandsweets.com/colors/brands/formula1-com), Vodafone (https://brandsweets.com/colors/brands/vodafone-com), AliExpress (https://brandsweets.com/colors/brands/aliexpress-com), Svelte (https://brandsweets.com/colors/brands/svelte-dev). — https://brandsweets.com/colors/crimson
- **Rust** #b7410e [harmony, pool: split] — Rust is a split-complement of #0c253b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Gallery (https://brandsweets.com/palettes/editorial#gallery), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre), Trailhead (https://brandsweets.com/palettes/warm#trailhead), Harvest (https://brandsweets.com/palettes/warm#harvest). — https://brandsweets.com/colors/rust
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #0c253b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Olive Grove (https://brandsweets.com/palettes/muted#olive-grove), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Harvest (https://brandsweets.com/palettes/warm#harvest). — https://brandsweets.com/colors/sienna
- **Slate Blue** #6a5acd [harmony, pool: analogous] — Slate Blue is #0c253b'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), GitLab (https://brandsweets.com/colors/brands/gitlab), Superhuman (https://brandsweets.com/colors/brands/superhuman-com), Sentry (https://brandsweets.com/colors/brands/sentry-io). — https://brandsweets.com/colors/slateblue
- **Teal** #008080 [harmony, pool: analogous] — Teal is #0c253b's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Alpine (https://brandsweets.com/palettes/cool#alpine), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold), Clinic (https://brandsweets.com/palettes/clean#clinic), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #0c253b in 18 real palettes, including Beach Hut and Southwest Airlines's brand system, as the supporting colour. Seen in: Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Southwest Airlines (https://brandsweets.com/colors/brands/southwest-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Blueprint (https://brandsweets.com/palettes/technical#blueprint). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 24 real palettes, including Monzo's brand system and Sketch's brand system put Blue beside #0c253b, as the accent. Seen in: Monzo (https://brandsweets.com/colors/brands/monzo-com), Sketch (https://brandsweets.com/colors/brands/sketch-com), Rolex (https://brandsweets.com/colors/brands/rolex-com), Bumble (https://brandsweets.com/colors/brands/bumble-com). — https://brandsweets.com/colors/blue

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

- On white (#ffffff): 15.63:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.34:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #2778be (4.52:1); AA: background → #8a8a8a (4.53:1); AAA: text → #519bdb (7.06:1); AAA: background → #b0b0b0 (7.21:1)

## Brands using this color

- **Monzo** — primary #14233c (Δ 1.102) — https://brandsweets.com/colors/brands/monzo-com
- **FIFA** — primary #102139 (Δ 1.344) — https://brandsweets.com/colors/brands/fifa-com
- **Microsoft** — accent #17253d (Δ 1.377) — https://brandsweets.com/colors/brands/microsoft-com
- **GEICO** — accent #062342 (Δ 1.707) — https://brandsweets.com/colors/brands/geico-com

## Curated palettes containing it

- **Telehealth** (modern, cool, friendly) — #2563eb, #93c5fd, #16a34a, #ffffff, #14213d — Friendly blue with a soft tint and a green all-clear — approachable care with a tech backbone. — tool: https://brandsweets.com/palettes/new/2563eb-93c5fd-16a34a-ffffff-14213d — collection: https://brandsweets.com/palettes/modern
- **First Snow** (winter, cool, light, minimal) — #2b4c7e, #8fa8c8, #c9d6e3, #fbfcfe, #14213d — Ice blue on snow-white with a deep navy — the quietest winter palette; everything is a tint of one cold hue. — tool: https://brandsweets.com/palettes/new/2b4c7e-8fa8c8-c9d6e3-fbfcfe-14213d — collection: https://brandsweets.com/palettes/winter

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- modern: https://brandsweets.com/fonts/mood/modern
- 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/0c253b-9cadc4-df4e51-1f212d-e9f1f1?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: "#0c253b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.