# #511d53

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

## Values

- Hex: `#511d53`
- RGB: rgb(81, 29, 83)
- HSL: hsl(298, 48%, 22%)
- OKLCH: oklch(0.333 0.108 326.2)
- Relative luminance: 0.0325
- Nearest named color: Cosmic Explorer (#551155, Δ 2.225) — https://brandsweets.com/colors/cosmic-explorer
- Moods: cool, dark, luxury, bold, modern
- Page: https://brandsweets.com/colors/511d53

## Tints & shades

- Tints (toward white): #6f2871, #89318c, #a63caa, #bb4abf, #c768ca, #d286d5, #dca1de, #e7bfe8, #f1d9f2, #fcf7fc
- Shades (toward black): #4a1b4b, #421844, #3f1740, #371439, #301131, #290f2a, #210c22, #1e0b1e, #160817, #0f050f

## Harmonies

- Complementary: #1f531d
- Analogous: #361d53, #531d3a
- Triadic: #53511d, #1d5351
- Split-complementary: #3a531d, #1d5336
- Tetradic: #53361d, #1f531d, #1d3a53

## Colors that go with #511d53

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

- **Sea Green** #2e8b57 [harmony, pool: complementary] — Sea Green sits directly opposite #511d53 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Asana (https://brandsweets.com/colors/brands/asana-com), Mushroom (https://brandsweets.com/palettes/neutral#mushroom). — https://brandsweets.com/colors/seagreen
- **Blue** #0000ff [pool] — 5 real palettes, including Sketch's brand system and Tim Hortons's brand system put Blue beside #511d53, as the accent. Seen in: Sketch (https://brandsweets.com/colors/brands/sketch-com), Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #511d53: 4 real palettes, including Open House and SoFi's brand system, as the supporting colour. Seen in: Open House (https://brandsweets.com/palettes/clean#open-house), SoFi (https://brandsweets.com/colors/brands/sofi-com), Coastal (https://brandsweets.com/palettes/cool#coastal), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty). — https://brandsweets.com/colors/cadetblue
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #511d53: softer than #000 and cool enough to feel like part of the same palette. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), Tumblr (https://brandsweets.com/colors/brands/tumblr-com), Squarespace (https://brandsweets.com/colors/brands/squarespace-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #511d53 in 8 real palettes, including Lenovo's brand system and Marvel's brand system, as the supporting colour. Seen in: Lenovo (https://brandsweets.com/colors/brands/lenovo-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #511d53: 8 real palettes, including Hinge's brand system and Heinz's brand system, as the accent. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), Heinz (https://brandsweets.com/colors/brands/heinz-com), Discover (https://brandsweets.com/colors/brands/discover-com), Amazon (https://brandsweets.com/colors/brands/amazon-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 #511d53, 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), CeraVe (https://brandsweets.com/colors/brands/cerave-com). — https://brandsweets.com/colors/midnightblue
- **Powder Blue** #b0e0e6 [pool] — Designers have shipped Powder Blue with #511d53: 6 real palettes, including Macaron and Sorbet, as the supporting colour. Seen in: Macaron (https://brandsweets.com/palettes/light#macaron), Sorbet (https://brandsweets.com/palettes/light#sorbet), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Opera (https://brandsweets.com/colors/brands/opera-com). — https://brandsweets.com/colors/powderblue

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

- On white (#ffffff): 12.72:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.65:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #b942bd (4.58:1); AA: background → #9c9c9c (4.63:1); AAA: text → #cc77cf (7.11:1); AAA: background → #c2c2c2 (7.14:1)

## Fonts for this mood

- luxury: https://brandsweets.com/fonts/mood/luxury
- bold: https://brandsweets.com/fonts/mood/bold
- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/511d53-c19fbe-98cb62-2d1f28-ede9f1?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: "#511d53" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.