# #644c8a

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

## Values

- Hex: `#644c8a`
- RGB: rgb(100, 76, 138)
- HSL: hsl(263, 29%, 42%)
- OKLCH: oklch(0.469 0.1 300.4)
- Relative luminance: 0.0971
- Nearest named color: Lords of the Night (#664488, Δ 2.038) — https://brandsweets.com/colors/lords-of-the-night
- Moods: cool, muted
- Page: https://brandsweets.com/colors/644c8a

## Tints & shades

- Tints (toward white): #72579e, #7f64aa, #8f78b5, #9d89be, #ad9cc9, #beb0d4, #cbc0dd, #dcd4e7, #e9e5f1, #faf8fb
- Shades (toward black): #5a457d, #513e70, #4a3866, #403159, #372a4c, #2d223f, #241b31, #1d1627, #130e1a, #0a070d

## Harmonies

- Complementary: #728a4c
- Analogous: #4c538a, #834c8a
- Triadic: #8a644c, #4c8a64
- Split-complementary: #8a834c, #538a4c
- Tetradic: #8a4c53, #728a4c, #4c8a83

## Colors that go with #644c8a

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 #644c8a: softer than #000 and cool enough to feel like part of the same palette. Seen in: Harbour (https://brandsweets.com/palettes/cool#harbour), Amazon (https://brandsweets.com/colors/brands/amazon-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: split] — Sea Green is a split-complement of #644c8a: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Subaru (https://brandsweets.com/colors/brands/subaru-com), 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
- **Blue** #0000ff [pool] — 4 real palettes, including Pixar's brand system and Tesco's brand system put Blue beside #644c8a, 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 #644c8a in 11 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 #644c8a: 13 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), Hinge (https://brandsweets.com/colors/brands/hinge-co), Dutch Bros (https://brandsweets.com/colors/brands/dutchbros-com). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 12 real palettes, including Lufthansa's brand system and FIFA's brand system put Midnight Blue beside #644c8a, as the lead colour. Seen in: Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com), FIFA (https://brandsweets.com/colors/brands/fifa-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), First Snow (https://brandsweets.com/palettes/cool#first-snow). — https://brandsweets.com/colors/midnightblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #644c8a in 12 real palettes, including Stripe's brand system and GitHub's brand system, as the accent. Seen in: Stripe (https://brandsweets.com/colors/brands/stripe), GitHub (https://brandsweets.com/colors/brands/github), Console Light (https://brandsweets.com/palettes/technical#console-light), Motorola (https://brandsweets.com/colors/brands/motorola-com). — https://brandsweets.com/colors/royalblue
- **Taupe** #483c32 [pool] — Taupe is paired with #644c8a in 9 real palettes, including Dusk and Superhuman's brand system, as that palette's text colour. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Superhuman (https://brandsweets.com/colors/brands/superhuman-com), Datadog (https://brandsweets.com/colors/brands/datadoghq-com), GitHub (https://brandsweets.com/colors/brands/github). — https://brandsweets.com/colors/taupe

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

- On white (#ffffff): 7.14:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.94:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #8268ac (4.53:1); AA: background → #cfcfcf (4.58:1); AAA: text → #a08cc0 (7.01:1); AAA: background → #ffffff (7.14:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/644c8a-b09cc4-dfd04e-2b1f2d-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: "#644c8a" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.