# #540d39

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

## Values

- Hex: `#540d39`
- RGB: rgb(84, 13, 57)
- HSL: hsl(323, 73%, 19%)
- OKLCH: oklch(0.306 0.112 348)
- Relative luminance: 0.0247
- Nearest named color: Velvet Cosmos (#441144, Δ 4.281) — https://brandsweets.com/colors/velvet-cosmos
- Moods: warm, vivid, dark, playful, bold, luxury
- Page: https://brandsweets.com/colors/540d39

## Tints & shades

- Tints (toward white): #771351, #9a1868, #be1e80, #dd2797, #e34aa8, #e869b7, #ed8cc8, #f3b0d9, #f8d3ea, #fef6fb
- Shades (toward black): #4f0c36, #470b30, #420a2d, #390927, #350824, #2c071e, #28061b, #1f0515, #1a0412, #12030c

## Harmonies

- Complementary: #0d5428
- Analogous: #4c0d54, #540d15
- Triadic: #39540d, #0d3954
- Split-complementary: #15540d, #0d544c
- Tetradic: #544c0d, #0d5428, #0d1554

## Colors that go with #540d39

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Crimson** #dc143c [harmony, pool: analogous] — Crimson is #540d39'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), M&M's (https://brandsweets.com/colors/brands/mms-com), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com). — https://brandsweets.com/colors/crimson
- **Sea Green** #2e8b57 [harmony, pool: complementary] — Sea Green sits directly opposite #540d39 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Mushroom (https://brandsweets.com/palettes/neutral#mushroom), Wellness (https://brandsweets.com/palettes/warm#wellness), Asana (https://brandsweets.com/colors/brands/asana-com). — https://brandsweets.com/colors/seagreen
- **Blue** #0000ff [pool] — 6 real palettes, including Tim Hortons's brand system and Sketch's brand system put Blue beside #540d39, as the accent. Seen in: Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Sketch (https://brandsweets.com/colors/brands/sketch-com), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Headspace (https://brandsweets.com/colors/brands/headspace-com). — https://brandsweets.com/colors/blue
- **Copper** #b87333 [pool] — Designers have shipped Copper with #540d39: 9 real palettes, including Bramble and Chipotle's brand system, as the supporting colour. Seen in: Bramble (https://brandsweets.com/palettes/muted#bramble), Chipotle (https://brandsweets.com/colors/brands/chipotle-com), Bakery (https://brandsweets.com/palettes/warm#bakery), Wellness (https://brandsweets.com/palettes/warm#wellness). — https://brandsweets.com/colors/copper
- **Dark Olive Green** #556b2f [pool] — Dark Olive Green shows up next to #540d39 in 4 real palettes, including Oatmeal and Cider, as the lead colour. Seen in: Oatmeal (https://brandsweets.com/palettes/neutral#oatmeal), Cider (https://brandsweets.com/palettes/warm#cider), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen), Olive Grove (https://brandsweets.com/palettes/muted#olive-grove). — https://brandsweets.com/colors/darkolivegreen
- **Denim** #1560bd [pool] — Designers have shipped Denim with #540d39: 9 real palettes, including Heinz's brand system and Box's brand system, as the accent. Seen in: Heinz (https://brandsweets.com/colors/brands/heinz-com), Box (https://brandsweets.com/colors/brands/box-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Discover (https://brandsweets.com/colors/brands/discover-com). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 5 real palettes, including Tide Pool and Volkswagen's brand system put Midnight Blue beside #540d39, as that palette's text colour. Seen in: Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Volkswagen (https://brandsweets.com/colors/brands/vw-com), Gillette (https://brandsweets.com/colors/brands/gillette-com), Allbirds (https://brandsweets.com/colors/brands/allbirds-com). — https://brandsweets.com/colors/midnightblue
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #540d39: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), Squarespace (https://brandsweets.com/colors/brands/squarespace-com). — https://brandsweets.com/colors/charcoal

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

- On white (#ffffff): 14.06:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.49:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #d82292 (4.56:1); AA: background → #949494 (4.63:1); AAA: text → #e869b7 (7.14:1); AAA: background → #b8b8b8 (7.09:1)

## 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/540d39-c19fb0-6dcb62-2d1f22-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: "#540d39" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.