# #511f70

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

## Values

- Hex: `#511f70`
- RGB: rgb(81, 31, 112)
- HSL: hsl(277, 57%, 28%)
- OKLCH: oklch(0.356 0.136 309.4)
- Relative luminance: 0.039
- Nearest named color: Elegant Purple Gown (#552367, Δ 2.109) — https://brandsweets.com/colors/elegant-purple-gown
- Moods: cool, dark, luxury, bold, modern
- Page: https://brandsweets.com/colors/511f70

## Tints & shades

- Tints (toward white): #65268c, #792ea8, #8e36c4, #9e4fcf, #ad6bd6, #bd87de, #cca3e6, #dcbfed, #ebdbf5, #fbf7fd
- Shades (toward black): #4b1d68, #42195c, #3d1754, #341448, #2e1240, #280f38, #200c2c, #1a0a24, #110718, #0c0410

## Harmonies

- Complementary: #3e701f
- Analogous: #281f70, #701f67
- Triadic: #70511f, #1f7051
- Split-complementary: #67701f, #1f7028
- Tetradic: #70281f, #3e701f, #1f6770

## Colors that go with #511f70

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 #511f70: softer than #000 and cool enough to feel like part of the same palette. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com), Tumblr (https://brandsweets.com/colors/brands/tumblr-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #511f70 in 6 real palettes, including Lenovo's brand system and Casper Sleep's brand system, as the supporting colour. Seen in: Lenovo (https://brandsweets.com/colors/brands/lenovo-com), Casper Sleep (https://brandsweets.com/colors/brands/casper-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com). — https://brandsweets.com/colors/crimson
- **Midnight Blue** #191970 [pool] — 5 real palettes, including Gillette's brand system and Visa's brand system put Midnight Blue beside #511f70, as the supporting colour. Seen in: Gillette (https://brandsweets.com/colors/brands/gillette-com), Visa (https://brandsweets.com/colors/brands/visa-com), Microsoft (https://brandsweets.com/colors/brands/microsoft-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool). — https://brandsweets.com/colors/midnightblue
- **Tomato** #ff6347 [pool] — 4 real palettes, including FedEx's brand system and Golden Hour put Tomato beside #511f70, as the supporting colour. Seen in: FedEx (https://brandsweets.com/colors/brands/fedex-com), Golden Hour (https://brandsweets.com/palettes/warm#golden-hour), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com), Harley-Davidson (https://brandsweets.com/colors/brands/harley-davidson-com). — https://brandsweets.com/colors/tomato
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #511f70 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/olive
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #511f70: 3 real palettes, including Purina Pro Plan's brand system and Blue Mono, as the accent. Seen in: Purina Pro Plan (https://brandsweets.com/colors/brands/chewy-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Zillow (https://brandsweets.com/colors/brands/zillow-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #511f70: 3 real palettes, including Peacock's brand system and Blue Mono, as the accent. Seen in: Peacock (https://brandsweets.com/colors/brands/peacocktv-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Blizzard (https://brandsweets.com/colors/brands/blizzard-com). — https://brandsweets.com/colors/cornflowerblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #511f70: 3 real palettes, including Hinge's brand system and Slack's brand system, as the accent. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), Slack (https://brandsweets.com/colors/brands/slack-com), Panasonic (https://brandsweets.com/colors/brands/panasonic-com). — https://brandsweets.com/colors/denim

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

- On white (#ffffff): 11.8:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.78:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #a053d0 (4.64:1); AA: background → #a1a1a1 (4.57:1); AAA: text → #b87fdc (7.11:1); AAA: background → #c9c9c9 (7.13:1)

## 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/511f70-b99cc4-bdcb62-2d1f2c-eae9f1?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: "#511f70" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.