# #643569

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

## Values

- Hex: `#643569`
- RGB: rgb(100, 53, 105)
- HSL: hsl(294, 33%, 31%)
- OKLCH: oklch(0.41 0.101 323.6)
- Relative luminance: 0.0628
- Nearest named color: Plum (#66386a, Δ 0.889) — https://brandsweets.com/colors/plum-2
- Moods: cool, muted
- Page: https://brandsweets.com/colors/643569

## Tints & shades

- Tints (toward white): #7a4181, #8e4b95, #a359ab, #b071b7, #bd88c3, #c99dcd, #d6b4d9, #e3cce5, #eee0f0, #fbf8fc
- Shades (toward black): #5a305f, #542c58, #4a274e, #402244, #3a1f3d, #301a33, #271529, #1d0f1f, #170c18, #0d070e

## Harmonies

- Complementary: #3a6935
- Analogous: #4a3569, #693554
- Triadic: #696435, #356964
- Split-complementary: #546935, #35694a
- Tetradic: #694a35, #3a6935, #355469

## Colors that go with #643569

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 #643569: softer than #000 and cool enough to feel like part of the same palette. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), Tumblr (https://brandsweets.com/colors/brands/tumblr-com), Harbour (https://brandsweets.com/palettes/cool#harbour), Codecademy (https://brandsweets.com/colors/brands/codecademy-com). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: complementary] — Sea Green sits directly opposite #643569 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/seagreen
- **Crimson** #dc143c [pool] — Crimson is paired with #643569 in 4 real palettes, including Lenovo's brand system and Wells Fargo's brand system, as the supporting colour. Seen in: Lenovo (https://brandsweets.com/colors/brands/lenovo-com), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Marvel (https://brandsweets.com/colors/brands/marvel-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #643569: 5 real palettes, including Hinge's brand system and HP's brand system, as the accent. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), HP (https://brandsweets.com/colors/brands/hp-com), Slack (https://brandsweets.com/colors/brands/slack-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/denim
- **Powder Blue** #b0e0e6 [pool] — Designers have shipped Powder Blue with #643569: 4 real palettes, including Macaron and First Snow, as the supporting colour. Seen in: Macaron (https://brandsweets.com/palettes/light#macaron), First Snow (https://brandsweets.com/palettes/cool#first-snow), Nursery (https://brandsweets.com/palettes/light#nursery), Stone (https://brandsweets.com/palettes/neutral#stone). — https://brandsweets.com/colors/powderblue
- **Taupe** #483c32 [pool] — Taupe is paired with #643569 in 4 real palettes, including Blush and Datadog's brand system, as that palette's text colour. Seen in: Blush (https://brandsweets.com/palettes/light#blush), Datadog (https://brandsweets.com/colors/brands/datadoghq-com), Sepia Mono (https://brandsweets.com/palettes/warm#sepia-mono), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/taupe
- **Teal** #008080 [harmony, pool: split] — Teal is a split-complement of #643569: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Stanley (https://brandsweets.com/colors/brands/stanley1913-com). — https://brandsweets.com/colors/teal
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #643569 in 3 real palettes, including Console Light and Wayfair's brand system, as the lead colour. Seen in: Console Light (https://brandsweets.com/palettes/technical#console-light), Wayfair (https://brandsweets.com/colors/brands/wayfair-com), Zoom (https://brandsweets.com/colors/brands/zoom-us). — https://brandsweets.com/colors/royalblue

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

- On white (#ffffff): 9.31:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.26:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #a359ab (4.57:1); AA: background → #b5b5b5 (4.54:1); AAA: text → #ba82c0 (7.04:1); AAA: background → #e0e0e0 (7.05:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/643569-c19fc0-9fcb62-2d1f29-ede9f1?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: "#643569" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.