# #183b49

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

## Values

- Hex: `#183b49`
- RGB: rgb(24, 59, 73)
- HSL: hsl(197, 51%, 19%)
- OKLCH: oklch(0.333 0.047 227)
- Relative luminance: 0.038
- Nearest named color: Astral Nomad (#203943, Δ 1.236) — https://brandsweets.com/colors/astral-nomad
- Moods: cool, dark, luxury, bold, modern
- Page: https://brandsweets.com/colors/183b49

## Tints & shades

- Tints (toward white): #225468, #2c6d87, #3686a6, #429ec2, #61aecc, #7cbbd5, #9bcbdf, #badbe9, #d8ebf3, #f7fbfd
- Shades (toward black): #163845, #14323e, #132f3a, #102832, #0f252e, #0c1f27, #0b1c23, #09161b, #071317, #050c0f

## Harmonies

- Complementary: #492618
- Analogous: #18493e, #182249
- Triadic: #49183b, #3b4918
- Split-complementary: #491822, #493e18
- Tetradic: #3e1849, #492618, #224918

## Colors that go with #183b49

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

- **Denim** #1560bd [harmony, pool: analogous] — Denim is #183b49's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: UEFA (https://brandsweets.com/colors/brands/uefa-com), Amazon (https://brandsweets.com/colors/brands/amazon-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/denim
- **Firebrick** #b22222 [harmony, pool: split] — Firebrick is a split-complement of #183b49: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Fenty Beauty (https://brandsweets.com/colors/brands/fentybeauty-com), Vodafone (https://brandsweets.com/colors/brands/vodafone-com), Datadog (https://brandsweets.com/colors/brands/datadoghq-com), Tommy Hilfiger (https://brandsweets.com/colors/brands/tommy-com). — https://brandsweets.com/colors/firebrick
- **Teal** #008080 [harmony, pool: analogous] — Teal is #183b49's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: N26 (https://brandsweets.com/colors/brands/n26-com), Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Gusto (https://brandsweets.com/colors/brands/gusto-com), Mid-Century (https://brandsweets.com/palettes/warm#mid-century). — https://brandsweets.com/colors/teal
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #183b49 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), Harvest (https://brandsweets.com/palettes/warm#harvest), BrandSweets (https://brandsweets.com/colors/brands/brandsweets). — https://brandsweets.com/colors/sienna
- **Amber** #ffbf00 [pool] — Amber is paired with #183b49 in 5 real palettes, including Beach Hut and McDonald's's brand system, as the supporting colour. Seen in: Beach Hut (https://brandsweets.com/palettes/light#beach-hut), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Google (https://brandsweets.com/colors/brands/google-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 12 real palettes, including Jeep's brand system and Minecraft's brand system put Blue beside #183b49, as the accent. Seen in: Jeep (https://brandsweets.com/colors/brands/jeep-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Instacart (https://brandsweets.com/colors/brands/instacart-com). — https://brandsweets.com/colors/blue
- **Blush Pink** #e8b4b8 [pool] — 5 real palettes, including Rain Garden and Garden Wedding put Blush Pink beside #183b49, as the accent. Seen in: Rain Garden (https://brandsweets.com/palettes/cool#rain-garden), Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding), Blush (https://brandsweets.com/palettes/light#blush), Nursery (https://brandsweets.com/palettes/light#nursery). — https://brandsweets.com/colors/blush-pink
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #183b49: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy. — https://brandsweets.com/colors/whitesmoke

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

- On white (#ffffff): 11.93:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.76:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #327d9a (4.54:1); AA: background → #a1a1a1 (4.62:1); AAA: text → #46a0c3 (7.08:1); AAA: background → #c7c7c7 (7.06:1)

## Brands using this color

- **Pampers** — secondary #063c50 (Δ 1.551) — https://brandsweets.com/colors/brands/pampers-com
- **Boeing** — primary #253746 (Δ 1.765) — https://brandsweets.com/colors/brands/boeing-com

## 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/183b49-9cb4c4-df4e6b-1f232d-e9f1ef?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: "#183b49" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.