# #183a37

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

## Values

- Hex: `#183a37`
- RGB: rgb(24, 58, 55)
- HSL: hsl(175, 41%, 16%)
- OKLCH: oklch(0.322 0.04 187.8)
- Relative luminance: 0.035
- Nearest named color: Botanical Night (#12403c, Δ 1.974) — https://brandsweets.com/colors/botanical-night
- Moods: dark, luxury, bold
- Page: https://brandsweets.com/colors/183a37

## Tints & shades

- Tints (toward white): #245652, #30736d, #3e938c, #4ab0a8, #64beb7, #81cac4, #9ed6d2, #bee4e1, #dbf0ee, #f8fcfc
- Shades (toward black): #173633, #153230, #122b29, #112826, #0f2422, #0e201f, #0c1d1b, #091615, #081211, #060e0e

## Harmonies

- Complementary: #3a181b
- Analogous: #183a26, #182c3a
- Triadic: #37183a, #3a3718
- Split-complementary: #3a182c, #3a2618
- Tetradic: #26183a, #3a181b, #2c3a18

## Colors that go with #183a37

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

- **Sea Green** #2e8b57 [harmony, pool: analogous] — Sea Green is #183a37's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Asana (https://brandsweets.com/colors/brands/asana-com), Mushroom (https://brandsweets.com/palettes/neutral#mushroom), Subaru (https://brandsweets.com/colors/brands/subaru-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/seagreen
- **Sienna** #a0522d [harmony, pool: split] — Sienna is a split-complement of #183a37: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. 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), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke). — https://brandsweets.com/colors/sienna
- **Teal** #008080 [harmony, pool: analogous] — Teal is #183a37'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), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Alpine (https://brandsweets.com/palettes/cool#alpine). — https://brandsweets.com/colors/teal
- **Indian Red** #cd5c5c [harmony, pool: complementary] — Indian Red sits directly opposite #183a37 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Zed (https://brandsweets.com/colors/brands/zed-dev). — https://brandsweets.com/colors/indianred
- **Amber** #ffbf00 [pool] — Amber is paired with #183a37 in 8 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] — 14 real palettes, including Instacart's brand system and Jeep's brand system put Blue beside #183a37, as the accent. Seen in: Instacart (https://brandsweets.com/colors/brands/instacart-com), Jeep (https://brandsweets.com/colors/brands/jeep-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Headspace (https://brandsweets.com/colors/brands/headspace-com). — https://brandsweets.com/colors/blue
- **Blush Pink** #e8b4b8 [pool] — 5 real palettes, including Rain Garden and Garden Wedding put Blush Pink beside #183a37, 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 #183a37: 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): 12.36:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.7:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #36817b (4.58:1); AA: background → #9c9c9c (4.5:1); AAA: text → #45a59d (7.12:1); AAA: background → #c4c4c4 (7.09:1)

## Brands using this color

- **Logitech** — accent #0d3a38 (Δ 0.879) — https://brandsweets.com/colors/brands/logitech-com
- **Chobani** — accent #1b3a32 (Δ 0.897) — https://brandsweets.com/colors/brands/chobani-com
- **Chobani** — secondary #1a3c34 (Δ 1.042) — https://brandsweets.com/colors/brands/chobani-com
- **N26** — accent #003b39 (Δ 1.547) — https://brandsweets.com/colors/brands/n26-com

## Curated palettes containing it

- **Mint Chip** (pastel, light, clean) — #98d8c8, #c8e6c9, #f7c8a0, #fbfffd, #1f3a33 — Mint and celadon with a peach accent — fresh without being clinical; the deep green text keeps it grounded. — tool: https://brandsweets.com/palettes/new/98d8c8-c8e6c9-f7c8a0-fbfffd-1f3a33 — collection: https://brandsweets.com/palettes/pastel

## Fonts for this mood

- 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/183a37-a2bdbe-d4599f-1f282d-e9f1ed?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: "#183a37" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.