# #370840

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

## Values

- Hex: `#370840`
- RGB: rgb(55, 8, 64)
- HSL: hsl(290, 78%, 14%)
- OKLCH: oklch(0.252 0.105 320.5)
- Relative luminance: 0.0136
- Nearest named color: Dark Purple (#35063e, Δ 0.726) — https://brandsweets.com/colors/dark-purple
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/370840

## Tints & shades

- Tints (toward white): #550c64, #78118d, #9716b1, #ba1bda, #c937e6, #d35ceb, #de84f0, #e8a9f4, #f3d2f9, #fdf6fe
- Shades (toward black): #32073b, #2f0736, #2b0632, #27062d, #230529, #1f0424, #1b0420, #17031b, #130317, #100212

## Harmonies

- Complementary: #114008
- Analogous: #1a0840, #40082d
- Triadic: #403608, #084036
- Split-complementary: #2d4008, #08401a
- Tetradic: #401a08, #114008, #082d40

## Colors that go with #370840

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 #370840: softer than #000 and cool enough to feel like part of the same palette. Seen in: Volkswagen (https://brandsweets.com/colors/brands/vw-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Microsoft (https://brandsweets.com/colors/brands/microsoft-com), Asana (https://brandsweets.com/colors/brands/asana-com). — https://brandsweets.com/colors/charcoal
- **Teal** #008080 [harmony, pool: split] — Teal is a split-complement of #370840: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Clinic (https://brandsweets.com/palettes/clean#clinic), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold), Alpine (https://brandsweets.com/palettes/cool#alpine). — https://brandsweets.com/colors/teal
- **Forest Green** #228b22 [harmony, pool: complementary] — Forest Green sits directly opposite #370840 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Acer (https://brandsweets.com/colors/brands/acer-com). — https://brandsweets.com/colors/forestgreen
- **Amber** #ffbf00 [pool] — Amber is paired with #370840 in 9 real palettes, including Southwest Airlines's brand system and Blueprint, as the accent. Seen in: Southwest Airlines (https://brandsweets.com/colors/brands/southwest-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 12 real palettes, including Sketch's brand system and Penpot's brand system put Blue beside #370840, as the accent. Seen in: Sketch (https://brandsweets.com/colors/brands/sketch-com), Penpot (https://brandsweets.com/colors/brands/penpot-app), Monzo (https://brandsweets.com/colors/brands/monzo-com), Warp (https://brandsweets.com/colors/brands/warp-dev). — https://brandsweets.com/colors/blue
- **Blue Violet** #8a2be2 [harmony, pool: analogous] — Blue Violet is #370840's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: ClickUp (https://brandsweets.com/colors/brands/clickup-com), Yahoo (https://brandsweets.com/colors/brands/yahoo-com), Gemstone (https://brandsweets.com/palettes/vivid#gemstone). — https://brandsweets.com/colors/blueviolet
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #370840: 8 real palettes, including SoFi's brand system and Dusk, as the supporting colour. Seen in: SoFi (https://brandsweets.com/colors/brands/sofi-com), Dusk (https://brandsweets.com/palettes/cool#dusk), Open House (https://brandsweets.com/palettes/clean#open-house), Arctic (https://brandsweets.com/palettes/clean#arctic). — https://brandsweets.com/colors/cadetblue
- **Champagne** #f7e7ce [pool] — 6 real palettes, including Allbirds's brand system and Bramble put Champagne beside #370840, as the accent. Seen in: Allbirds (https://brandsweets.com/colors/brands/allbirds-com), Bramble (https://brandsweets.com/palettes/muted#bramble), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), Darkroom (https://brandsweets.com/palettes/muted#darkroom). — https://brandsweets.com/colors/champagne

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

- On white (#ffffff): 16.52:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.27:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #c21ce3 (4.57:1); AA: background → #878787 (4.6:1); AAA: text → #d769ec (7.12:1); AAA: background → #ababab (7.19:1)

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- modern: https://brandsweets.com/fonts/mood/modern
- 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/370840-bf9fc1-a6cb62-2d1f29-ece9f1?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: "#370840" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.