# #581b65

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

## Values

- Hex: `#581b65`
- RGB: rgb(88, 27, 101)
- HSL: hsl(289, 58%, 25%)
- OKLCH: oklch(0.353 0.133 320.1)
- Relative luminance: 0.038
- Nearest named color: Elegant Purple Gown (#552367, Δ 1.593) — https://brandsweets.com/colors/elegant-purple-gown
- Moods: cool, dark, luxury, bold, modern
- Page: https://brandsweets.com/colors/581b65

## Tints & shades

- Tints (toward white): #702281, #8b2ba1, #a432bd, #b546ce, #c266d6, #cd82de, #d89ee5, #e4bbed, #f0dbf5, #fcf7fd
- Shades (toward black): #50195d, #491655, #42144d, #3b1244, #34103c, #2a0d30, #230b28, #1c0920, #150618, #0e0410

## Harmonies

- Complementary: #28651b
- Analogous: #321b65, #651b4d
- Triadic: #65571b, #1b6557
- Split-complementary: #4d651b, #1b6532
- Tetradic: #65321b, #28651b, #1b4d65

## Colors that go with #581b65

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 #581b65: 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
- **Tomato** #ff6347 [pool] — 4 real palettes, including FedEx's brand system and Golden Hour put Tomato beside #581b65, as the supporting colour. Seen in: FedEx (https://brandsweets.com/colors/brands/fedex-com), Golden Hour (https://brandsweets.com/palettes/warm#golden-hour), Harley-Davidson (https://brandsweets.com/colors/brands/harley-davidson-com), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com). — https://brandsweets.com/colors/tomato
- **Forest Green** #228b22 [harmony: complementary] — Forest Green sits directly opposite #581b65 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
- **Crimson** #dc143c [pool] — Crimson is paired with #581b65 in 3 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). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #581b65: 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), Heinz (https://brandsweets.com/colors/brands/heinz-com). — https://brandsweets.com/colors/denim
- **Teal** #008080 [harmony: split] — Teal is a split-complement of #581b65: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/teal
- **Olive Green** #808000 [harmony: split] — Olive Green is a split-complement of #581b65: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/olive
- **Mauve** #e0b0ff [pool] — Mauve shows up next to #581b65 in two real palettes: Ledger's brand system and Lavender Haze, as the accent. Seen in: Ledger (https://brandsweets.com/colors/brands/ledger-com), Lavender Haze (https://brandsweets.com/palettes/playful#lavender-haze). — https://brandsweets.com/colors/mauve

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

- On white (#ffffff): 11.93:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.76:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #b342cd (4.58:1); AA: background → #a1a1a1 (4.62:1); AAA: text → #c876db (7.07:1); AAA: background → #c7c7c7 (7.06:1)

## 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/581b65-be9fc1-a8cb62-2d1f2a-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: "#581b65" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.