# #2b5d64

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

## Values

- Hex: `#2b5d64`
- RGB: rgb(43, 93, 100)
- HSL: hsl(187, 40%, 28%)
- OKLCH: oklch(0.447 0.055 207.5)
- Relative luminance: 0.0926
- Nearest named color: Arctic Nights (#345c61, Δ 0.906) — https://brandsweets.com/colors/arctic-nights
- Moods: cool, dark, luxury, bold, modern
- Page: https://brandsweets.com/colors/2b5d64

## Tints & shades

- Tints (toward white): #36757d, #408c96, #4ba3af, #62b1bc, #7bbec6, #94cad1, #add6dc, #c6e3e7, #dfeff1, #f8fbfc
- Shades (toward black): #28575d, #234d52, #20464b, #1c3c40, #183539, #152f32, #112527, #0e1e20, #091415, #060d0e

## Harmonies

- Complementary: #64322b
- Analogous: #2b644e, #2b4164
- Triadic: #642b5d, #5d642b
- Split-complementary: #642b41, #644e2b
- Tetradic: #4e2b64, #64322b, #41642b

## Colors that go with #2b5d64

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

- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #2b5d64's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Capital One (https://brandsweets.com/colors/brands/capitalone-com), Auth0 (https://brandsweets.com/colors/brands/auth0-com), Plaid (https://brandsweets.com/colors/brands/plaid-com), Discover (https://brandsweets.com/colors/brands/discover-com). — https://brandsweets.com/colors/steelblue
- **Rust** #b7410e [harmony, pool: complementary] — Rust sits directly opposite #2b5d64 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre), IHG (https://brandsweets.com/colors/brands/ihg-com), Trailhead (https://brandsweets.com/palettes/warm#trailhead). — https://brandsweets.com/colors/rust
- **Blue** #0000ff [pool] — 7 real palettes, including Rolex's brand system and Warp's brand system put Blue beside #2b5d64, as the accent. Seen in: Rolex (https://brandsweets.com/colors/brands/rolex-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Jeep (https://brandsweets.com/colors/brands/jeep-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #2b5d64: 4 real palettes, including Alpine and Open House, as the supporting colour. Seen in: Alpine (https://brandsweets.com/palettes/cool#alpine), Open House (https://brandsweets.com/palettes/clean#open-house), Dusk (https://brandsweets.com/palettes/cool#dusk), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine). — https://brandsweets.com/colors/cadetblue
- **Copper** #b87333 [pool] — Designers have shipped Copper with #2b5d64: 4 real palettes, including Desert Road and Dusk, as the lead colour. Seen in: Desert Road (https://brandsweets.com/palettes/warm#desert-road), Dusk (https://brandsweets.com/palettes/cool#dusk), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen), Riverbed (https://brandsweets.com/palettes/muted#riverbed). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #2b5d64 in 7 real palettes, including Codecademy's brand system and Gemstone, as the accent. Seen in: Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Wendy's (https://brandsweets.com/colors/brands/wendys-com), Redfin (https://brandsweets.com/colors/brands/redfin-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #2b5d64: 12 real palettes, including HP's brand system and The New York Times's brand system, as the accent. Seen in: HP (https://brandsweets.com/colors/brands/hp-com), The New York Times (https://brandsweets.com/colors/brands/nytimes-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/denim
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #2b5d64: 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): 7.36:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.85:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #3a7f88 (4.57:1); AA: background → #cccccc (4.58:1); AAA: text → #4ba3af (7.16:1); AAA: background → #fafafa (7.05:1)

## 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/2b5d64-a2b8be-df4e83-1f262d-e9f1ee?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: "#2b5d64" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.