# #81599b

A color — cool, muted. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#81599b`
- RGB: rgb(129, 89, 155)
- HSL: hsl(276, 27%, 48%)
- OKLCH: oklch(0.533 0.109 311)
- Relative luminance: 0.1418
- Nearest named color: Passion Flower (#6f5698, Δ 3.324) — https://brandsweets.com/colors/passion-flower
- Moods: cool, muted
- Page: https://brandsweets.com/colors/81599b

## Tints & shades

- Tints (toward white): #8e67a8, #9a77b1, #a687ba, #b297c3, #bea8cd, #cab8d6, #d6c8df, #e2d8e9, #eee8f2, #faf9fb
- Shades (toward black): #76528e, #69497e, #5e4171, #513861, #463054, #3b2947, #2e2037, #23182a, #160f1a, #0b070d

## Harmonies

- Complementary: #749b59
- Analogous: #60599b, #9b5995
- Triadic: #9b8159, #599b81
- Split-complementary: #959b59, #599b60
- Tetradic: #9b6059, #749b59, #59959b

## Colors that go with #81599b

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 #81599b: softer than #000 and cool enough to feel like part of the same palette. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), Plaid (https://brandsweets.com/colors/brands/plaid-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #81599b in 5 real palettes, including Marvel's brand system and Wells Fargo's brand system, as the accent. Seen in: Marvel (https://brandsweets.com/colors/brands/marvel-com), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Netflix (https://brandsweets.com/colors/brands/netflix), Ulta Beauty (https://brandsweets.com/colors/brands/ulta-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #81599b: 4 real palettes, including Campus and Linkedin's brand system, as the lead colour. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), Linkedin (https://brandsweets.com/colors/brands/linkedin-com), The New York Times (https://brandsweets.com/colors/brands/nytimes-com), HP (https://brandsweets.com/colors/brands/hp-com). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 8 real palettes, including Marvel's brand system and Fintech Trust put Midnight Blue beside #81599b, as the supporting colour. Seen in: Marvel (https://brandsweets.com/colors/brands/marvel-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/midnightblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #81599b in 5 real palettes, including Slate Workspace and Stripe's brand system, as the accent. Seen in: Slate Workspace (https://brandsweets.com/palettes/minimal#slate-workspace), Stripe (https://brandsweets.com/colors/brands/stripe), GitHub (https://brandsweets.com/colors/brands/github), Guinness (https://brandsweets.com/colors/brands/guinness-com). — https://brandsweets.com/colors/royalblue
- **Sea Green** #2e8b57 [pool] — Sea Green shows up next to #81599b in 5 real palettes, including Next.js's brand system and Jack Daniel's's brand system, as the supporting colour. Seen in: Next.js (https://brandsweets.com/colors/brands/nextjs-org), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Netflix (https://brandsweets.com/colors/brands/netflix), Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com). — https://brandsweets.com/colors/seagreen
- **Taupe** #483c32 [pool] — Taupe is paired with #81599b in 6 real palettes, including Superhuman's brand system and Dusk, as the lead colour. Seen in: Superhuman (https://brandsweets.com/colors/brands/superhuman-com), Dusk (https://brandsweets.com/palettes/cool#dusk), GitHub (https://brandsweets.com/colors/brands/github), Graphite Mono (https://brandsweets.com/palettes/neutral#graphite-mono). — https://brandsweets.com/colors/taupe
- **Dark Olive Green** #556b2f [harmony: complementary] — Dark Olive Green sits directly opposite #81599b 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/darkolivegreen

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

- On white (#ffffff): 5.47:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #6c4a82 (7.14:1)
- On black (#000000): 3.84:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #8e67a8 (4.66:1); AA: background → #ebebeb (4.59:1); AAA: text → #a88abc (7.03:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/81599b-b99cc4-bfcb62-2d1f2d-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: "#81599b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.