# #6b37be

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

## Values

- Hex: `#6b37be`
- RGB: rgb(107, 55, 190)
- HSL: hsl(263, 55%, 48%)
- OKLCH: oklch(0.48 0.198 295.6)
- Relative luminance: 0.0958
- Nearest named color: Blurple (#5539cc, Δ 4.621) — https://brandsweets.com/colors/blurple
- Moods: cool, modern
- Page: https://brandsweets.com/colors/6b37be

## Tints & shades

- Tints (toward white): #7845c9, #8659cf, #956dd5, #a381da, #b194e0, #c0a8e6, #cebceb, #dcd0f1, #ebe3f7, #f9f7fd
- Shades (toward black): #6232ae, #572d9a, #4e288a, #432277, #3a1e67, #311957, #261443, #1d0f33, #120920, #090510

## Harmonies

- Complementary: #8abe37
- Analogous: #3747be, #ae37be
- Triadic: #be6b37, #37be6b
- Split-complementary: #beae37, #47be37
- Tetradic: #be3747, #8abe37, #37beae

## Colors that go with #6b37be

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 #6b37be: softer than #000 and cool enough to feel like part of the same palette. Seen in: 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), UEFA (https://brandsweets.com/colors/brands/uefa-com). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #6b37be's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Wayfair (https://brandsweets.com/colors/brands/wayfair-com), Fivetran blue (https://brandsweets.com/colors/brands/fivetran-com), Yahoo (https://brandsweets.com/colors/brands/yahoo-com), Guinness (https://brandsweets.com/colors/brands/guinness-com). — https://brandsweets.com/colors/royalblue
- **Crimson** #dc143c [pool] — Crimson is paired with #6b37be in 6 real palettes, including Gemstone and Wells Fargo's brand system, as the accent. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), 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
- **Midnight Blue** #191970 [pool] — 6 real palettes, including Kraken's brand system and Purina Pro Plan's brand system put Midnight Blue beside #6b37be, as the lead colour. Seen in: Kraken (https://brandsweets.com/colors/brands/kraken-com), Purina Pro Plan (https://brandsweets.com/colors/brands/chewy-com), Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com), Marvel (https://brandsweets.com/colors/brands/marvel-com). — https://brandsweets.com/colors/midnightblue
- **Sea Green** #2e8b57 [harmony, pool: split] — Sea Green is a split-complement of #6b37be: 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). — https://brandsweets.com/colors/seagreen
- **Tomato** #ff6347 [pool] — 4 real palettes, including GitLab's brand system and Fivetran blue's brand system put Tomato beside #6b37be, as the lead colour. Seen in: GitLab (https://brandsweets.com/colors/brands/gitlab), Fivetran blue (https://brandsweets.com/colors/brands/fivetran-com), Etsy (https://brandsweets.com/colors/brands/etsy-com), FedEx (https://brandsweets.com/colors/brands/fedex-com). — https://brandsweets.com/colors/tomato
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #6b37be 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/olive
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #6b37be: 3 real palettes, including Zillow's brand system and Unilever's brand system, as the supporting colour. Seen in: Zillow (https://brandsweets.com/colors/brands/zillow-com), Unilever (https://brandsweets.com/colors/brands/unilever-com), Warbyparker (https://brandsweets.com/colors/brands/warbyparker-com). — https://brandsweets.com/colors/cobalt

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

- On white (#ffffff): 7.2:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.92:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #895dd0 (4.54:1); AA: background → #cfcfcf (4.62:1); AAA: text → #a988dd (7.25:1); AAA: background → #fcfcfc (7.02:1)

## Brands using this color

- **Deno** — primary #6639ba (Δ 1.11) — https://brandsweets.com/colors/brands/deno-com
- **Deno** — accent #6639ba (Δ 1.11) — https://brandsweets.com/colors/brands/deno-com

## Fonts for this mood

- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/6b37be-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: "#6b37be" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.