# #3f644b

A color — muted. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#3f644b`
- RGB: rgb(63, 100, 75)
- HSL: hsl(139, 23%, 32%)
- OKLCH: oklch(0.468 0.059 154)
- Relative luminance: 0.1068
- Nearest named color: Forest Serenade (#336644, Δ 1.986) — https://brandsweets.com/colors/forest-serenade
- Moods: muted
- Page: https://brandsweets.com/colors/3f644b

## Tints & shades

- Tints (toward white): #4d7a5b, #588d69, #68a17a, #7bad8b, #91ba9e, #a7c8b2, #bad4c2, #d0e2d6, #e3ede6, #f9fbf9
- Shades (toward black): #395b44, #33523d, #2f4b38, #294231, #23382a, #1d2f23, #18261c, #141f17, #0e1610, #080d09

## Harmonies

- Complementary: #643f58
- Analogous: #46643f, #3f645d
- Triadic: #4b3f64, #644b3f
- Split-complementary: #5d3f64, #643f46
- Tetradic: #3f4664, #643f58, #645d3f

## Colors that go with #3f644b

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 #3f644b: softer than #000 and cool enough to feel like part of the same palette. Seen in: Canopy (https://brandsweets.com/palettes/cool#canopy), Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Pampers (https://brandsweets.com/colors/brands/pampers-com), Gusto (https://brandsweets.com/colors/brands/gusto-com). — https://brandsweets.com/colors/charcoal
- **Blue** #0000ff [pool] — 4 real palettes, including Warp's brand system and Rolex's brand system put Blue beside #3f644b, as the supporting colour. Seen in: Warp (https://brandsweets.com/colors/brands/warp-dev), Rolex (https://brandsweets.com/colors/brands/rolex-com), Jeep (https://brandsweets.com/colors/brands/jeep-com), Kia (https://brandsweets.com/colors/brands/kia-com). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #3f644b: 4 real palettes, including Paper & Pine and Alpine, as the supporting colour. Seen in: Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), Alpine (https://brandsweets.com/palettes/cool#alpine), Open House (https://brandsweets.com/palettes/clean#open-house), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/cadetblue
- **Champagne** #f7e7ce [pool] — 5 real palettes, including Darkroom and BrandSweets's brand system put Champagne beside #3f644b, as the surface under it. Seen in: Darkroom (https://brandsweets.com/palettes/muted#darkroom), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Sweetgreen (https://brandsweets.com/colors/brands/sweetgreen-com). — https://brandsweets.com/colors/champagne
- **Copper** #b87333 [pool] — Designers have shipped Copper with #3f644b: 5 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), Riverbed (https://brandsweets.com/palettes/muted#riverbed), Wellness (https://brandsweets.com/palettes/warm#wellness). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #3f644b in 7 real palettes, including Gemstone and Five Guys's brand system, as the accent. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Five Guys (https://brandsweets.com/colors/brands/fiveguys-com), Netflix (https://brandsweets.com/colors/brands/netflix), Codecademy (https://brandsweets.com/colors/brands/codecademy-com). — https://brandsweets.com/colors/crimson
- **Dark Goldenrod** #b8860b [pool] — 4 real palettes, including Cider and Rolex's brand system put Dark Goldenrod beside #3f644b, as the supporting colour. Seen in: Cider (https://brandsweets.com/palettes/warm#cider), Rolex (https://brandsweets.com/colors/brands/rolex-com), Greige (https://brandsweets.com/palettes/neutral#greige), Puma (https://brandsweets.com/colors/brands/puma-com). — https://brandsweets.com/colors/darkgoldenrod
- **Slate Blue** #6a5acd [harmony, pool: split] — Slate Blue is a split-complement of #3f644b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas). — https://brandsweets.com/colors/slateblue

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

- On white (#ffffff): 6.7:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #3b5e46 (7.3:1)
- On black (#000000): 3.14:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #518160 (4.66:1); AA: background → #d4d4d4 (4.52:1); AAA: text → #6ca37d (7.17:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/3f644b-a2beae-c059d4-1f2d2a-ebf1e9?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: "#3f644b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.