# #390859

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

## Values

- Hex: `#390859`
- RGB: rgb(57, 8, 89)
- HSL: hsl(276, 84%, 19%)
- OKLCH: oklch(0.278 0.131 306.4)
- Relative luminance: 0.0176
- Nearest named color: Cotinga Purple (#340059, Δ 1.757) — https://brandsweets.com/colors/cotinga-purple
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/390859

## Tints & shades

- Tints (toward white): #500b7f, #680ea4, #8012ca, #9719eb, #a83fee, #b75ff1, #c885f4, #d9abf8, #ead0fb, #fbf6fe
- Shades (toward black): #360754, #30074b, #2d0646, #27053d, #240538, #1e042f, #1b042a, #150321, #12021c, #0c0213

## Harmonies

- Complementary: #285908
- Analogous: #100859, #590851
- Triadic: #593908, #085939
- Split-complementary: #515908, #085910
- Tetradic: #591008, #285908, #085159

## Colors that go with #390859

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 #390859: softer than #000 and cool enough to feel like part of the same palette. Seen in: Microsoft (https://brandsweets.com/colors/brands/microsoft-com), Volkswagen (https://brandsweets.com/colors/brands/vw-com), Plaid (https://brandsweets.com/colors/brands/plaid-com), CeraVe (https://brandsweets.com/colors/brands/cerave-com). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #390859's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Telehealth (https://brandsweets.com/palettes/modern#telehealth), Discord (https://brandsweets.com/colors/brands/discord), Penpot (https://brandsweets.com/colors/brands/penpot-app), Spectrum (https://brandsweets.com/colors/brands/spectrum-com). — https://brandsweets.com/colors/royalblue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #390859: 4 real palettes, including SoFi's brand system and Open House, as the supporting colour. Seen in: SoFi (https://brandsweets.com/colors/brands/sofi-com), Open House (https://brandsweets.com/palettes/clean#open-house), Coastal (https://brandsweets.com/palettes/cool#coastal), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/cadetblue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #390859: 6 real palettes, including Blue Mono and MLB's brand system, as the lead colour. Seen in: Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), MLB (https://brandsweets.com/colors/brands/mlb-com), Purina Pro Plan (https://brandsweets.com/colors/brands/chewy-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #390859 in 4 real palettes, including Casper Sleep's brand system and Marvel's brand system, as the lead colour. Seen in: Casper Sleep (https://brandsweets.com/colors/brands/casper-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), Nintendo (https://brandsweets.com/colors/brands/nintendo-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #390859: 12 real palettes, including Discover's brand system and Bank of America's brand system, as the supporting colour. Seen in: Discover (https://brandsweets.com/colors/brands/discover-com), Bank of America (https://brandsweets.com/colors/brands/bankofamerica-com), Open House (https://brandsweets.com/palettes/clean#open-house), Panasonic (https://brandsweets.com/colors/brands/panasonic-com). — https://brandsweets.com/colors/denim
- **Powder Blue** #b0e0e6 [pool] — Designers have shipped Powder Blue with #390859: 5 real palettes, including First Snow and Opera's brand system, as the accent. Seen in: First Snow (https://brandsweets.com/palettes/cool#first-snow), Opera (https://brandsweets.com/colors/brands/opera-com), Glacier (https://brandsweets.com/palettes/cool#glacier), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/powderblue
- **Steel Blue** #4682b4 [pool] — Designers have shipped Steel Blue with #390859: 7 real palettes, including Discover's brand system and FedEx's brand system, as the accent. Seen in: Discover (https://brandsweets.com/colors/brands/discover-com), FedEx (https://brandsweets.com/colors/brands/fedex-com), Plaid (https://brandsweets.com/colors/brands/plaid-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/steelblue

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

- On white (#ffffff): 15.52:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.35:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #a83fee (4.61:1); AA: background → #8c8c8c (4.62:1); AAA: text → #c177f3 (7.2:1); AAA: background → #b0b0b0 (7.16:1)

## Brands using this color

- **MetaMask** — secondary #3d065f (Δ 1.345) — https://brandsweets.com/colors/brands/metamask-io

## 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/390859-b99cc4-bfcb62-2d1f2d-eae9f1?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: "#390859" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.