# #511a5b

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

## Values

- Hex: `#511a5b`
- RGB: rgb(81, 26, 91)
- HSL: hsl(291, 56%, 23%)
- OKLCH: oklch(0.334 0.121 321.1)
- Relative luminance: 0.0324
- Nearest named color: Cosmic Explorer (#551155, Δ 1.857) — https://brandsweets.com/colors/cosmic-explorer
- Moods: cool, dark, luxury, bold, modern
- Page: https://brandsweets.com/colors/511a5b

## Tints & shades

- Tints (toward white): #6e237b, #872b97, #a334b7, #b644ca, #c364d3, #cd80db, #daa0e4, #e5bbec, #f1dbf5, #fcf7fd
- Shades (toward black): #4b1854, #43154c, #3c1344, #35113c, #321038, #2b0d30, #230b28, #1c0920, #150718, #0e0410

## Harmonies

- Complementary: #245b1a
- Analogous: #311a5b, #5b1a45
- Triadic: #5b521a, #1a5b52
- Split-complementary: #455b1a, #1a5b31
- Tetradic: #5b311a, #245b1a, #1a455b

## Colors that go with #511a5b

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 #511a5b: 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), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #511a5b in 5 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), Casper Sleep (https://brandsweets.com/colors/brands/casper-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #511a5b: 7 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), Panasonic (https://brandsweets.com/colors/brands/panasonic-com). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 4 real palettes, including Tide Pool and Volkswagen's brand system put Midnight Blue beside #511a5b, 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), Visa (https://brandsweets.com/colors/brands/visa-com). — https://brandsweets.com/colors/midnightblue
- **Powder Blue** #b0e0e6 [pool] — Designers have shipped Powder Blue with #511a5b: 4 real palettes, including Macaron and Frost & Ember, as the supporting colour. Seen in: Macaron (https://brandsweets.com/palettes/light#macaron), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Sorbet (https://brandsweets.com/palettes/light#sorbet), Opera (https://brandsweets.com/colors/brands/opera-com). — https://brandsweets.com/colors/powderblue
- **Slate Gray** #708090 [pool] — 4 real palettes, including Bloomberg's brand system and Hermès's brand system put Slate Gray beside #511a5b, as the accent. Seen in: Bloomberg (https://brandsweets.com/colors/brands/bloomberg-com), Hermès (https://brandsweets.com/colors/brands/hermes-com), PlayStation® Official Site: Consoles, Games, Accessories & MoreSony Interactive Entertainment (https://brandsweets.com/colors/brands/playstation-com), Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue). — https://brandsweets.com/colors/slategray
- **Taupe** #483c32 [pool] — Taupe is paired with #511a5b in 4 real palettes, including Superhuman's brand system and Gillette's brand system, as the supporting colour. Seen in: Superhuman (https://brandsweets.com/colors/brands/superhuman-com), Gillette (https://brandsweets.com/colors/brands/gillette-com), American Eagle (https://brandsweets.com/colors/brands/ae-com), Boeing (https://brandsweets.com/colors/brands/boeing-com). — https://brandsweets.com/colors/taupe
- **Forest Green** #228b22 [harmony: complementary] — Forest Green sits directly opposite #511a5b 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

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

- On white (#ffffff): 12.74:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.65:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #b540c9 (4.54:1); AA: background → #9c9c9c (4.64:1); AAA: text → #ca78d9 (7.2:1); AAA: background → #c2c2c2 (7.15:1)

## 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/511a5b-bf9fc1-a4cb62-2d1f29-ece9f1?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: "#511a5b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.