# #400359

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

## Values

- Hex: `#400359`
- RGB: rgb(64, 3, 89)
- HSL: hsl(283, 93%, 18%)
- OKLCH: oklch(0.284 0.138 312.3)
- Relative luminance: 0.0188
- Nearest named color: Clairvoyant (#480656, Δ 2.145) — https://brandsweets.com/colors/clairvoyant
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/400359

## Tints & shades

- Tints (toward white): #5d0580, #7a06a7, #9607cf, #b309f6, #bf30f8, #cb58f9, #d77ffa, #e4a6fc, #f0cefd, #fcf5ff
- Shades (toward black): #3d0354, #36034a, #320245, #2b023b, #270236, #240231, #1d0127, #190122, #120119, #0e0114

## Harmonies

- Complementary: #1b5903
- Analogous: #160359, #590346
- Triadic: #594003, #035940
- Split-complementary: #465903, #035916
- Tetradic: #591603, #1b5903, #034659

## Colors that go with #400359

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 #400359: 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), Hinge (https://brandsweets.com/colors/brands/hinge-co). — https://brandsweets.com/colors/charcoal
- **Denim** #1560bd [pool] — Designers have shipped Denim with #400359: 7 real palettes, including Discover's brand system and Heinz's brand system, as the supporting colour. Seen in: Discover (https://brandsweets.com/colors/brands/discover-com), Heinz (https://brandsweets.com/colors/brands/heinz-com), Bank of America (https://brandsweets.com/colors/brands/bankofamerica-com), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/denim
- **Forest Green** #228b22 [harmony: complementary] — Forest Green sits directly opposite #400359 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. — https://brandsweets.com/colors/forestgreen
- **Blue** #0000ff [pool] — 3 real palettes, including Sketch's brand system and Monzo's brand system put Blue beside #400359, as the accent. Seen in: Sketch (https://brandsweets.com/colors/brands/sketch-com), Monzo (https://brandsweets.com/colors/brands/monzo-com), Penpot (https://brandsweets.com/colors/brands/penpot-app). — https://brandsweets.com/colors/blue
- **Crimson** #dc143c [pool] — Crimson is paired with #400359 in 3 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). — https://brandsweets.com/colors/crimson
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #400359 in 3 real palettes, including Discord's brand system and Telehealth, as the lead colour. Seen in: Discord (https://brandsweets.com/colors/brands/discord), Telehealth (https://brandsweets.com/palettes/modern#telehealth), Penpot (https://brandsweets.com/colors/brands/penpot-app). — https://brandsweets.com/colors/royalblue
- **Slate Blue** #6a5acd [harmony, pool: analogous] — Slate Blue is #400359's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Marvel (https://brandsweets.com/colors/brands/marvel-com), Superhuman (https://brandsweets.com/colors/brands/superhuman-com). — https://brandsweets.com/colors/slateblue
- **Taupe** #483c32 [pool] — Taupe is paired with #400359 in 3 real palettes, including American Eagle's brand system and Gillette's brand system, as the lead colour. Seen in: American Eagle (https://brandsweets.com/colors/brands/ae-com), Gillette (https://brandsweets.com/colors/brands/gillette-com), Superhuman (https://brandsweets.com/colors/brands/superhuman-com). — https://brandsweets.com/colors/taupe

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

- On white (#ffffff): 15.27:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.38:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #b91df7 (4.58:1); AA: background → #8c8c8c (4.54:1); AAA: text → #d16bfa (7.19:1); AAA: background → #b0b0b0 (7.04:1)

## Brands using this color

- **MetaMask** — secondary #3d065f (Δ 1.415) — 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/400359-bb9fc1-b2cb62-2d1f2b-ebe9f1?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: "#400359" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.