# #643a57

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

## Values

- Hex: `#643a57`
- RGB: rgb(100, 58, 87)
- HSL: hsl(319, 27%, 31%)
- OKLCH: oklch(0.41 0.072 339.4)
- Relative luminance: 0.0642
- Nearest named color: Eggplant (#614051, Δ 2.253) — https://brandsweets.com/colors/eggplant
- Moods: warm, muted, editorial, elegant
- Page: https://brandsweets.com/colors/643a57

## Tints & shades

- Tints (toward white): #7b476a, #8e527b, #a4608e, #b1779f, #be8eaf, #c9a1bc, #d6b8cc, #e3cedd, #eee2ea, #fbf9fa
- Shades (toward black): #5b344e, #543049, #4a2b40, #412538, #3a2232, #311c2a, #271622, #1d1119, #170d14, #0d070b

## Harmonies

- Complementary: #3a6447
- Analogous: #5d3a64, #643a42
- Triadic: #57643a, #3a5764
- Split-complementary: #42643a, #3a645d
- Tetradic: #645d3a, #3a6447, #3a4264

## Colors that go with #643a57

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 #643a57 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Saffron (https://brandsweets.com/palettes/warm#saffron), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre). — https://brandsweets.com/colors/teal
- **Copper** #b87333 [pool] — Designers have shipped Copper with #643a57: 5 real palettes, including Bramble and Notion's brand system, as the supporting colour. Seen in: Bramble (https://brandsweets.com/palettes/muted#bramble), Notion (https://brandsweets.com/colors/brands/notion), Dusk (https://brandsweets.com/palettes/cool#dusk), Bakery (https://brandsweets.com/palettes/warm#bakery). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #643a57 in 5 real palettes, including Lenovo's brand system and Codecademy's brand system, as the supporting colour. Seen in: Lenovo (https://brandsweets.com/colors/brands/lenovo-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #643a57: 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
- **Midnight Blue** #191970 [pool] — 4 real palettes, including Microsoft's brand system and First Snow put Midnight Blue beside #643a57, as the accent. Seen in: Microsoft (https://brandsweets.com/colors/brands/microsoft-com), First Snow (https://brandsweets.com/palettes/cool#first-snow), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com). — https://brandsweets.com/colors/midnightblue
- **Powder Blue** #b0e0e6 [pool] — Designers have shipped Powder Blue with #643a57: 4 real palettes, including Nursery and Stone, as the supporting colour. Seen in: Nursery (https://brandsweets.com/palettes/light#nursery), Stone (https://brandsweets.com/palettes/neutral#stone), Macaron (https://brandsweets.com/palettes/light#macaron), First Snow (https://brandsweets.com/palettes/cool#first-snow). — https://brandsweets.com/colors/powderblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #643a57 in 6 real palettes, including Console Light and Zoom's brand system, as the lead colour. Seen in: Console Light (https://brandsweets.com/palettes/technical#console-light), Zoom (https://brandsweets.com/colors/brands/zoom-us), GitHub (https://brandsweets.com/colors/brands/github), Subaru (https://brandsweets.com/colors/brands/subaru-com). — https://brandsweets.com/colors/royalblue
- **Cream** #fffdd0 [role] — Cream is the surface #643a57 wants: a warm off-white that shares its undertone, so #643a57 reads softer on it than on pure white. — https://brandsweets.com/colors/cream

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

- On white (#ffffff): 9.19:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.28:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #a4608e (4.64:1); AA: background → #b8b8b8 (4.63:1); AAA: text → #ba87aa (7.13:1); AAA: background → #e3e3e3 (7.16:1)

## 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/643a57-c19fb2-74cb62-2d1f23-f0e9f1?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: "#643a57" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.