# #540337

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

## Values

- Hex: `#540337`
- RGB: rgb(84, 3, 55)
- HSL: hsl(321, 93%, 17%)
- OKLCH: oklch(0.297 0.121 348.5)
- Relative luminance: 0.0223
- Nearest named color: Velvet Cosmos (#441144, Δ 4.469) — https://brandsweets.com/colors/velvet-cosmos
- Moods: warm, vivid, dark, playful, bold, luxury
- Page: https://brandsweets.com/colors/540337

## Tints & shades

- Tints (toward white): #7b0452, #a2066c, #ca0786, #f109a0, #f830b2, #f958c0, #fa7fcf, #fca6de, #fdceed, #fff5fb
- Shades (toward black): #4f0334, #45022e, #40022a, #3b0227, #360224, #2c021d, #27011a, #220117, #190110, #14010d

## Harmonies

- Complementary: #03541f
- Analogous: #480354, #54030f
- Triadic: #375403, #033754
- Split-complementary: #0f5403, #035448
- Tetradic: #544803, #03541f, #030f54

## Colors that go with #540337

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 #540337'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 #540337 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). — https://brandsweets.com/colors/seagreen
- **Copper** #b87333 [pool] — Designers have shipped Copper with #540337: 4 real palettes, including Chipotle's brand system and Bramble, as the accent. Seen in: Chipotle (https://brandsweets.com/colors/brands/chipotle-com), Bramble (https://brandsweets.com/palettes/muted#bramble), Bakery (https://brandsweets.com/palettes/warm#bakery), Wellness (https://brandsweets.com/palettes/warm#wellness). — https://brandsweets.com/colors/copper
- **Denim** #1560bd [pool] — Designers have shipped Denim with #540337: 4 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
- **Wheat** #f5deb3 [pool] — Designers have shipped Wheat with #540337: 4 real palettes, including Sorbet and Candlelight, as the supporting colour. Seen in: Sorbet (https://brandsweets.com/palettes/light#sorbet), Candlelight (https://brandsweets.com/palettes/warm#candlelight), Resort (https://brandsweets.com/palettes/light#resort), Oatmeal (https://brandsweets.com/palettes/neutral#oatmeal). — https://brandsweets.com/colors/wheat
- **Blue** #0000ff [pool] — 3 real palettes, including Tim Hortons's brand system and Sketch's brand system put Blue beside #540337, 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). — https://brandsweets.com/colors/blue
- **Cream** #fffdd0 [role, pool] — Cream is the surface #540337 wants: a warm off-white that shares its undertone, so #540337 reads softer on it than on pure white. Seen in: MetaMask (https://brandsweets.com/colors/brands/metamask-io). — https://brandsweets.com/colors/cream
- **Eggplant** #614051 [pool] — Eggplant shows up next to #540337 in 3 real palettes, including Golden Hour and Blush, as the accent. Seen in: Golden Hour (https://brandsweets.com/palettes/warm#golden-hour), Blush (https://brandsweets.com/palettes/light#blush), Sepia Mono (https://brandsweets.com/palettes/warm#sepia-mono). — https://brandsweets.com/colors/eggplant

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

- On white (#ffffff): 14.53:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.45:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #dd0893 (4.53:1); AA: background → #919191 (4.61:1); AAA: text → #f953bf (7.02:1); AAA: background → #b5b5b5 (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/540337-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: "#540337" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.