# #6b3871

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

## Values

- Hex: `#6b3871`
- RGB: rgb(107, 56, 113)
- HSL: hsl(294, 34%, 33%)
- OKLCH: oklch(0.428 0.108 323.3)
- Relative luminance: 0.0715
- Nearest named color: Eminence (#6e3974, Δ 0.795) — https://brandsweets.com/colors/eminence
- Moods: cool, muted
- Page: https://brandsweets.com/colors/6b3871

## Tints & shades

- Tints (toward white): #824389, #954d9d, #a85eb0, #b373ba, #c08bc6, #cb9fd0, #d8b7dc, #e3cce6, #f0e4f2, #fbf8fc
- Shades (toward black): #613267, #582d5c, #4e2852, #442348, #3e2041, #341b37, #2a162c, #201122, #170c18, #0d070e

## Harmonies

- Complementary: #3d7138
- Analogous: #4e3871, #71385a
- Triadic: #716b38, #38716b
- Split-complementary: #5a7138, #38714e
- Tetradic: #714e38, #3d7138, #385a71

## Colors that go with #6b3871

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 #6b3871: 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). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #6b3871 in 4 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), Stripe (https://brandsweets.com/colors/brands/stripe), GitHub (https://brandsweets.com/colors/brands/github). — https://brandsweets.com/colors/royalblue
- **Taupe** #483c32 [pool] — Taupe is paired with #6b3871 in 6 real palettes, including Datadog's brand system and Blush, as that palette's text colour. Seen in: Datadog (https://brandsweets.com/colors/brands/datadoghq-com), Blush (https://brandsweets.com/palettes/light#blush), Dusk (https://brandsweets.com/palettes/cool#dusk), Superhuman (https://brandsweets.com/colors/brands/superhuman-com). — https://brandsweets.com/colors/taupe
- **Sea Green** #2e8b57 [harmony: complementary] — Sea Green sits directly opposite #6b3871 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/seagreen
- **Denim** #1560bd [pool] — Designers have shipped Denim with #6b3871: 3 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). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 3 real palettes, including First Snow and Microsoft's brand system put Midnight Blue beside #6b3871, as that palette's text colour. Seen in: First Snow (https://brandsweets.com/palettes/cool#first-snow), Microsoft (https://brandsweets.com/colors/brands/microsoft-com), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com). — https://brandsweets.com/colors/midnightblue
- **Tomato** #ff6347 [pool] — 3 real palettes, including Golden Hour and Harley-Davidson's brand system put Tomato beside #6b3871, as the supporting colour. Seen in: Golden Hour (https://brandsweets.com/palettes/warm#golden-hour), Harley-Davidson (https://brandsweets.com/colors/brands/harley-davidson-com), FedEx (https://brandsweets.com/colors/brands/fedex-com). — https://brandsweets.com/colors/tomato
- **Teal** #008080 [harmony: split] — Teal is a split-complement of #6b3871: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/teal

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

- On white (#ffffff): 8.64:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.43:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #a458ad (4.58:1); AA: background → #bdbdbd (4.6:1); AAA: text → #bc84c2 (7.22:1); AAA: background → #e8e8e8 (7.06:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/6b3871-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: "#6b3871" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.