# #3f554e

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

## Values

- Hex: `#3f554e`
- RGB: rgb(63, 85, 78)
- HSL: hsl(161, 15%, 29%)
- OKLCH: oklch(0.429 0.029 173.3)
- Relative luminance: 0.081
- Nearest named color: All Nighter (#455454, Δ 1.475) — https://brandsweets.com/colors/all-nighter
- Moods: muted, dark, luxury, bold
- Page: https://brandsweets.com/colors/3f554e

## Tints & shades

- Tints (toward white): #4e6a61, #5d7e74, #6c9387, #81a297, #95b1a8, #a7beb7, #bccdc8, #d0dcd8, #e5ebe9, #f9fbfa
- Shades (toward black): #3b4f49, #344641, #30413b, #293833, #25322e, #1e2926, #1a2320, #141a18, #0f1513, #090c0b

## Harmonies

- Complementary: #553f46
- Analogous: #3f5543, #3f5155
- Triadic: #4e3f55, #554e3f
- Split-complementary: #553f51, #55433f
- Tetradic: #433f55, #553f46, #51553f

## Colors that go with #3f554e

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

- **Blue** #0000ff [pool] — 7 real palettes, including Jeep's brand system and Rolex's brand system put Blue beside #3f554e, as the accent. Seen in: Jeep (https://brandsweets.com/colors/brands/jeep-com), Rolex (https://brandsweets.com/colors/brands/rolex-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #3f554e: 4 real palettes, including Paper & Pine and Dusk, as the supporting colour. Seen in: Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), Dusk (https://brandsweets.com/palettes/cool#dusk), Open House (https://brandsweets.com/palettes/clean#open-house), Alpine (https://brandsweets.com/palettes/cool#alpine). — https://brandsweets.com/colors/cadetblue
- **Copper** #b87333 [pool] — Designers have shipped Copper with #3f554e: 4 real palettes, including Desert Road and Clay & Linen, as the lead colour. Seen in: Desert Road (https://brandsweets.com/palettes/warm#desert-road), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen), Dusk (https://brandsweets.com/palettes/cool#dusk), Notion (https://brandsweets.com/colors/brands/notion). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #3f554e in 4 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), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), MAC Cosmetics (https://brandsweets.com/colors/brands/maccosmetics-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #3f554e: 6 real palettes, including HP's brand system and Hinge's brand system, as the accent. Seen in: HP (https://brandsweets.com/colors/brands/hp-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Starlink (https://brandsweets.com/colors/brands/starlink-com). — https://brandsweets.com/colors/denim
- **Emerald Green** #50c878 [pool] — Emerald Green is paired with #3f554e in 5 real palettes, including Neon's brand system and Chime's brand system, as the lead colour. Seen in: Neon (https://brandsweets.com/colors/brands/neon-tech), Chime (https://brandsweets.com/colors/brands/chime-com), CircleCI (https://brandsweets.com/colors/brands/circleci-com), Docker (https://brandsweets.com/colors/brands/docker-com). — https://brandsweets.com/colors/emerald-green
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #3f554e in 5 real palettes, including Fireside and Disney's brand system, as the accent. Seen in: Fireside (https://brandsweets.com/palettes/dark#fireside), Disney (https://brandsweets.com/colors/brands/disney-com), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/goldenrod
- **White Smoke** #f5f5f5 [role] — White Smoke is the near-white surface #3f554e was made for — maximum legibility with no colour cast to argue with. — https://brandsweets.com/colors/whitesmoke

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

- On white (#ffffff): 8.01:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.62:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #5b7b71 (4.52:1); AA: background → #c4c4c4 (4.59:1); AAA: text → #7b9d93 (7.09:1); AAA: background → #f0f0f0 (7.03:1)

## 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/3f554e-a2beb8-d459bb-1f2c2d-e9f1eb?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: "#3f554e" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.