# #4b0131

A color — warm, vivid, dark, playful, bold, luxury. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#4b0131`
- RGB: rgb(75, 1, 49)
- HSL: hsl(321, 97%, 15%)
- OKLCH: oklch(0.274 0.114 348)
- Relative luminance: 0.0174
- Nearest named color: Dark Sanctuary (#3f012c, Δ 3.045) — https://brandsweets.com/colors/dark-sanctuary
- Moods: warm, vivid, dark, playful, bold, luxury
- Page: https://brandsweets.com/colors/4b0131

## Tints & shades

- Tints (toward white): #74024c, #a10269, #c90384, #f1049e, #fc27b1, #fc4fc0, #fd77ce, #fea0dd, #fecded, #fff5fb
- Shades (toward black): #46012e, #41012b, #3c0128, #370124, #320121, #28011a, #230117, #1e0014, #190010, #14000d

## Harmonies

- Complementary: #014b1b
- Analogous: #40014b, #4b010c
- Triadic: #314b01, #01314b
- Split-complementary: #0c4b01, #014b40
- Tetradic: #4b4001, #014b1b, #010c4b

## Colors that go with #4b0131

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 body-text near-black for #4b0131: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Squarespace (https://brandsweets.com/colors/brands/squarespace-com), Volkswagen (https://brandsweets.com/colors/brands/vw-com), Boeing (https://brandsweets.com/colors/brands/boeing-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: analogous] — Crimson is #4b0131's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Burger King (https://brandsweets.com/colors/brands/bk-com), Pinterest (https://brandsweets.com/colors/brands/pinterest-com), M&M's (https://brandsweets.com/colors/brands/mms-com). — https://brandsweets.com/colors/crimson
- **Steel Blue** #4682b4 [harmony, pool: triadic] — Steel Blue completes a triad with #4b0131 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Discover (https://brandsweets.com/colors/brands/discover-com), Astro (https://brandsweets.com/colors/brands/astro-build), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop). — https://brandsweets.com/colors/steelblue
- **Sea Green** #2e8b57 [harmony, pool: complementary] — Sea Green sits directly opposite #4b0131 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Wellness (https://brandsweets.com/palettes/warm#wellness), Mushroom (https://brandsweets.com/palettes/neutral#mushroom), Subaru (https://brandsweets.com/colors/brands/subaru-com). — https://brandsweets.com/colors/seagreen
- **Amber** #ffbf00 [pool] — Amber is paired with #4b0131 in 4 real palettes, including McDonald's's brand system and Wikipedia's brand system, as the lead colour. Seen in: McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Maple (https://brandsweets.com/palettes/warm#maple), Google (https://brandsweets.com/colors/brands/google-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 7 real palettes, including Tim Hortons's brand system and Sketch's brand system put Blue beside #4b0131, as the accent. Seen in: Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Sketch (https://brandsweets.com/colors/brands/sketch-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Headspace (https://brandsweets.com/colors/brands/headspace-com). — https://brandsweets.com/colors/blue
- **Champagne** #f7e7ce [pool] — 5 real palettes, including Allbirds's brand system and Darkroom put Champagne beside #4b0131, as the accent. Seen in: Allbirds (https://brandsweets.com/colors/brands/allbirds-com), Darkroom (https://brandsweets.com/palettes/muted#darkroom), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), Bramble (https://brandsweets.com/palettes/muted#bramble). — https://brandsweets.com/colors/champagne
- **Chocolate** #d2691e [pool] — Chocolate shows up next to #4b0131 in 4 real palettes, including Wellness and Homestead, as the accent. Seen in: Wellness (https://brandsweets.com/palettes/warm#wellness), Homestead (https://brandsweets.com/palettes/warm#homestead), Farmers Market (https://brandsweets.com/palettes/warm#farmers-market), Postman (https://brandsweets.com/colors/brands/postman-com). — https://brandsweets.com/colors/chocolate

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

- On white (#ffffff): 15.58:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.35:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #e20394 (4.67:1); AA: background → #8a8a8a (4.51:1); AAA: text → #fc4fc0 (7.02:1); AAA: background → #b0b0b0 (7.18:1)

## Fonts for this mood

- warm: https://brandsweets.com/fonts/mood/warm
- playful: https://brandsweets.com/fonts/mood/playful
- bold: https://brandsweets.com/fonts/mood/bold
- luxury: https://brandsweets.com/fonts/mood/luxury

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/4b0131-c19fb1-70cb62-2d1f22-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: "#4b0131" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.