# #643f40

A color — warm, muted, editorial, elegant. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#643f40`
- RGB: rgb(100, 63, 64)
- HSL: hsl(358, 23%, 32%)
- OKLCH: oklch(0.411 0.052 17.8)
- Relative luminance: 0.0663
- Nearest named color: Brunette (#664238, Δ 1.811) — https://brandsweets.com/colors/brunette
- Moods: warm, muted, editorial, elegant
- Page: https://brandsweets.com/colors/643f40

## Tints & shades

- Tints (toward white): #7a4d4e, #8d585a, #a1686a, #ad7b7d, #ba9193, #c8a7a8, #d4babb, #e2d0d1, #ede3e3, #fbf9f9
- Shades (toward black): #5b393a, #523334, #4b2f30, #42292a, #382324, #2f1d1e, #261818, #1f1414, #160e0e, #0d0808

## Harmonies

- Complementary: #3f6463
- Analogous: #643f53, #64503f
- Triadic: #40643f, #3f4064
- Split-complementary: #3f6450, #3f5364
- Tetradic: #53643f, #3f6463, #503f64

## Colors that go with #643f40

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

- **Teal** #008080 [harmony, pool: complementary] — Teal sits directly opposite #643f40 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Saffron (https://brandsweets.com/palettes/warm#saffron), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre), Stanley (https://brandsweets.com/colors/brands/stanley1913-com). — https://brandsweets.com/colors/teal
- **Copper** #b87333 [pool] — Designers have shipped Copper with #643f40: 4 real palettes, including Bramble and Bakery, as the supporting colour. Seen in: Bramble (https://brandsweets.com/palettes/muted#bramble), Bakery (https://brandsweets.com/palettes/warm#bakery), Notion (https://brandsweets.com/colors/brands/notion), Desert Road (https://brandsweets.com/palettes/warm#desert-road). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #643f40 in 4 real palettes, including Dunkin''s brand system and Codecademy's brand system, as the accent. Seen in: Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-com), M&M's (https://brandsweets.com/colors/brands/mms-com), Burger King (https://brandsweets.com/colors/brands/bk-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #643f40: 4 real palettes, including Hinge's brand system and HP's brand system, as the accent. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), HP (https://brandsweets.com/colors/brands/hp-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Starlink (https://brandsweets.com/colors/brands/starlink-com). — https://brandsweets.com/colors/denim
- **Hunter Green** #355e3b [pool] — Hunter Green is paired with #643f40 in 4 real palettes, including Darkroom and Bookshop, as the accent. Seen in: Darkroom (https://brandsweets.com/palettes/muted#darkroom), Bookshop (https://brandsweets.com/palettes/editorial#bookshop), Pine & Birch (https://brandsweets.com/palettes/clean#pine-and-birch), Canopy (https://brandsweets.com/palettes/cool#canopy). — https://brandsweets.com/colors/hunter-green
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #643f40 in 4 real palettes, including Tumblr's brand system and Audi's brand system, as the accent. Seen in: Tumblr (https://brandsweets.com/colors/brands/tumblr-com), Audi (https://brandsweets.com/colors/brands/audi-com), Neon (https://brandsweets.com/colors/brands/neon-tech), HubSpot (https://brandsweets.com/colors/brands/hubspot-com). — https://brandsweets.com/colors/orangered
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #643f40 in 6 real palettes, including Console Light and Subaru's brand system, as the lead colour. Seen in: Console Light (https://brandsweets.com/palettes/technical#console-light), Subaru (https://brandsweets.com/colors/brands/subaru-com), GitHub (https://brandsweets.com/colors/brands/github), Zoom (https://brandsweets.com/colors/brands/zoom-us). — https://brandsweets.com/colors/royalblue
- **Cream** #fffdd0 [role] — Cream is the surface #643f40 wants: a warm off-white that shares its undertone, so #643f40 reads softer on it than on pure white. — https://brandsweets.com/colors/cream

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

- On white (#ffffff): 9.02:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.33:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #9f6567 (4.53:1); AA: background → #b8b8b8 (4.55:1); AAA: text → #b68b8c (7.06:1); AAA: background → #e3e3e3 (7.03:1)

## Fonts for this mood

- warm: https://brandsweets.com/fonts/mood/warm
- editorial: https://brandsweets.com/fonts/mood/editorial
- elegant: https://brandsweets.com/fonts/mood/elegant

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/643f40-c49f9c-62cb95-2d251f-f1e9ed?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: "#643f40" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.