# #b31bbb

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

## Values

- Hex: `#b31bbb`
- RGB: rgb(179, 27, 187)
- HSL: hsl(297, 75%, 42%)
- OKLCH: oklch(0.551 0.242 325.8)
- Relative luminance: 0.1396
- Nearest named color: Magentleman (#aa22bb, Δ 1.786) — https://brandsweets.com/colors/magentleman
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/b31bbb

## Tints & shades

- Tints (toward white): #cd1fd6, #d82de1, #dd48e5, #e15ee8, #e679ec, #eb94f0, #efaaf3, #f4c5f7, #f8dbfa, #fdf6fe
- Shades (toward black): #a218aa, #911698, #84148a, #731178, #620f67, #510c55, #400a43, #330836, #220524, #110312

## Harmonies

- Complementary: #23bb1b
- Analogous: #631bbb, #bb1b73
- Triadic: #bbb31b, #1bbbb3
- Split-complementary: #73bb1b, #1bbb63
- Tetradic: #bb631b, #23bb1b, #1b73bb

## Colors that go with #b31bbb

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Forest Green** #228b22 [harmony: complementary] — Forest Green sits directly opposite #b31bbb 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/forestgreen
- **Teal** #008080 [harmony, pool: split] — Teal is a split-complement of #b31bbb: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone). — https://brandsweets.com/colors/teal
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #b31bbb: softer than #000 and cool enough to feel like part of the same palette. Seen in: Hasbro (https://brandsweets.com/colors/brands/hasbro-com). — https://brandsweets.com/colors/charcoal
- **Denim** #1560bd [pool] — Designers have shipped Denim with #b31bbb: 3 real palettes, including Hasbro's brand system and Peacock, as the supporting colour. Seen in: Hasbro (https://brandsweets.com/colors/brands/hasbro-com), Peacock (https://brandsweets.com/palettes/vivid#peacock), Linkedin (https://brandsweets.com/colors/brands/linkedin-com). — https://brandsweets.com/colors/denim
- **Olive Green** #808000 [harmony: split] — Olive Green is a split-complement of #b31bbb: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/olive
- **Crimson** #dc143c [pool] — Crimson is paired with #b31bbb in two real palettes: The Ordinary's brand system and Gemstone, as the supporting colour. Seen in: The Ordinary (https://brandsweets.com/colors/brands/theordinary-com), Gemstone (https://brandsweets.com/palettes/vivid#gemstone). — https://brandsweets.com/colors/crimson
- **Blue Violet** #8a2be2 [harmony: analogous] — Blue Violet is #b31bbb's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. — https://brandsweets.com/colors/blueviolet
- **Dark Cyan** #008b8b [pool] — Designers have shipped Dark Cyan with #b31bbb: Peacock, as the lead colour. Seen in: Peacock (https://brandsweets.com/palettes/vivid#peacock). — https://brandsweets.com/colors/darkcyan

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

- On white (#ffffff): 5.54:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #95169c (7.31:1)
- On black (#000000): 3.79:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #c91ed2 (4.6:1); AA: background → #e8e8e8 (4.52:1); AAA: text → #e263e9 (7.2:1)

## Brands using this color

- **Hasbro** — accent #b822c3 (Δ 1.684) — https://brandsweets.com/colors/brands/hasbro-com

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- 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/b31bbb-c19fbe-9acb62-2d1f28-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: "#b31bbb" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.