# #664b95

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

## Values

- Hex: `#664b95`
- RGB: rgb(102, 75, 149)
- HSL: hsl(262, 33%, 44%)
- OKLCH: oklch(0.476 0.118 298.7)
- Relative luminance: 0.1003
- Nearest named color: Lords of the Night (#664488, Δ 2.519) — https://brandsweets.com/colors/lords-of-the-night
- Moods: cool, muted
- Page: https://brandsweets.com/colors/664b95

## Tints & shades

- Tints (toward white): #7254a6, #8266b2, #9077bb, #a18cc5, #af9dcd, #bcaed6, #cdc2e0, #dbd3e9, #ece7f3, #f9f8fc
- Shades (toward black): #5d4488, #543e7a, #4a376d, #41305f, #382951, #2f2244, #251b36, #1c1529, #130e1b, #09070e

## Harmonies

- Complementary: #7a954b
- Analogous: #4b5595, #8b4b95
- Triadic: #95664b, #4b9566
- Split-complementary: #958b4b, #55954b
- Tetradic: #954b55, #7a954b, #4b958b

## Colors that go with #664b95

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 #664b95: softer than #000 and cool enough to feel like part of the same palette. Seen in: Harbour (https://brandsweets.com/palettes/cool#harbour), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Starlink (https://brandsweets.com/colors/brands/starlink-com). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: split] — Sea Green is a split-complement of #664b95: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: 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), Next.js (https://brandsweets.com/colors/brands/nextjs-org). — https://brandsweets.com/colors/seagreen
- **Blue** #0000ff [pool] — 4 real palettes, including Pixar's brand system and Tesco's brand system put Blue beside #664b95, as the accent. Seen in: Pixar (https://brandsweets.com/colors/brands/pixar-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Activision (https://brandsweets.com/colors/brands/activision-com). — https://brandsweets.com/colors/blue
- **Crimson** #dc143c [pool] — Crimson is paired with #664b95 in 9 real palettes, including Wells Fargo's brand system and Walgreens's brand system, as the lead colour. Seen in: Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), Netflix (https://brandsweets.com/colors/brands/netflix). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #664b95: 12 real palettes, including HP's brand system and The New York Times's brand system, as the accent. Seen in: HP (https://brandsweets.com/colors/brands/hp-com), The New York Times (https://brandsweets.com/colors/brands/nytimes-com), Linkedin (https://brandsweets.com/colors/brands/linkedin-com), Dairy Queen (https://brandsweets.com/colors/brands/dairyqueen-com). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 13 real palettes, including Fintech Trust and Lufthansa's brand system put Midnight Blue beside #664b95, as that palette's text colour. Seen in: Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com), FIFA (https://brandsweets.com/colors/brands/fifa-com), Marvel (https://brandsweets.com/colors/brands/marvel-com). — https://brandsweets.com/colors/midnightblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #664b95 in 12 real palettes, including Stripe's brand system and Fivetran blue's brand system, as the accent. Seen in: Stripe (https://brandsweets.com/colors/brands/stripe), Fivetran blue (https://brandsweets.com/colors/brands/fivetran-com), Guinness (https://brandsweets.com/colors/brands/guinness-com), Wayfair (https://brandsweets.com/colors/brands/wayfair-com). — https://brandsweets.com/colors/royalblue
- **Taupe** #483c32 [pool] — Taupe is paired with #664b95 in 7 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), Datadog (https://brandsweets.com/colors/brands/datadoghq-com), Nikon (https://brandsweets.com/colors/brands/nikon-com). — https://brandsweets.com/colors/taupe

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

- On white (#ffffff): 6.99:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #644992 (7.22:1)
- On black (#000000): 3.01:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #856ab4 (4.72:1); AA: background → #d1d1d1 (4.58:1); AAA: text → #a18cc5 (7.07:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/664b95-af9cc4-dfce4e-2a1f2d-e9eaf1?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: "#664b95" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.