# #b181f3

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

## Values

- Hex: `#b181f3`
- RGB: rgb(177, 129, 243)
- HSL: hsl(265, 83%, 73%)
- OKLCH: oklch(0.697 0.167 301.7)
- Relative luminance: 0.3152
- Nearest named color: Illicit Purple (#bf77f6, Δ 3.097) — https://brandsweets.com/colors/illicit-purple
- Moods: cool, vivid, light, technical, modern, clean
- Page: https://brandsweets.com/colors/b181f3

## Tints & shades

- Tints (toward white): #b98ff5, #bf98f5, #c8a6f7, #ceb0f8, #d6bef9, #dcc7fa, #e5d5fb, #ebdefc, #f3ecfd, #f9f6fe
- Shades (toward black): #9c60f0, #8840ed, #741fea, #6314d2, #5611b6, #460e95, #370b75, #280854, #180533, #090213

## Harmonies

- Complementary: #c4f381
- Analogous: #818bf3, #ea81f3
- Triadic: #f3b181, #81f3b1
- Split-complementary: #f3ea81, #8bf381
- Tetradic: #f3818b, #c4f381, #81f3ea

## Colors that go with #b181f3

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

- **Medium Sea Green** #3cb371 [harmony, pool: complementary] — Medium Sea Green sits directly opposite #b181f3 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/mediumseagreen
- **Amber** #ffbf00 [pool] — Amber is paired with #b181f3 in 3 real palettes, including Mastodon hosted on mastodon.social's brand system and Blueprint, as the accent. Seen in: Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/amber
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #b181f3: softer than #000 and cool enough to feel like part of the same palette. Seen in: Auth0 (https://brandsweets.com/colors/brands/auth0-com). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #b181f3 in 3 real palettes, including Loom's brand system and Roblox's brand system, as the lead colour. Seen in: Loom (https://brandsweets.com/colors/brands/loom-com), Roblox (https://brandsweets.com/colors/brands/roblox-com), Sephora (https://brandsweets.com/colors/brands/sephora-com). — https://brandsweets.com/colors/royalblue
- **Light Sea Green** #20b2aa [harmony, pool: triadic] — Light Sea Green completes a triad with #b181f3 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Netlify (https://brandsweets.com/colors/brands/netlify-com). — https://brandsweets.com/colors/lightseagreen
- **Dark Goldenrod** #b8860b [harmony: split] — Dark Goldenrod is a split-complement of #b181f3: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/darkgoldenrod
- **Blue** #0000ff [pool] — Two real palettes: Canva's brand system and Spotify's brand system put Blue beside #b181f3, as the accent. Seen in: Canva (https://brandsweets.com/colors/brands/canva-com), Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/blue
- **Emerald Green** #50c878 [pool] — Emerald Green is paired with #b181f3 in two real palettes: Obsidian's brand system and Supabase's brand system, as the accent. Seen in: Obsidian (https://brandsweets.com/colors/brands/obsidian-md), Supabase (https://brandsweets.com/colors/brands/supabase). — https://brandsweets.com/colors/emerald-green

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

- On white (#ffffff): 2.88:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #914eef (4.63:1); AA: background → #303030 (4.59:1); AAA: text → #6e16e9 (7.11:1); AAA: background → #050505 (7.09:1)
- On black (#000000): 7.3:1 — AA pass, AA-large pass, AAA pass

## Fonts for this mood

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

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/b181f3-b19cc4-dfd54e-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: "#b181f3" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.