# #b311d0

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

## Values

- Hex: `#b311d0`
- RGB: rgb(179, 17, 208)
- HSL: hsl(291, 85%, 44%)
- OKLCH: oklch(0.561 0.262 320.2)
- Relative luminance: 0.1454
- Nearest named color: Ferocious Fuchsia (#aa00cc, Δ 2.138) — https://brandsweets.com/colors/ferocious-fuchsia
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/b311d0

## Tints & shades

- Tints (toward white): #c713e7, #d12bee, #d642f0, #dc5ff2, #e176f4, #e68ef6, #ecaaf8, #f2c2fa, #f8defc, #fdf6fe
- Shades (toward black): #a30fbd, #920eaa, #820c97, #720b84, #620971, #51085e, #41064b, #310539, #210326, #100213

## Harmonies

- Complementary: #2dd011
- Analogous: #5411d0, #d0118d
- Triadic: #d0b311, #11d0b3
- Split-complementary: #8dd011, #11d054
- Tetradic: #d05411, #2dd011, #118dd0

## Colors that go with #b311d0

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 #b311d0 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
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #b311d0: 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 #b311d0: 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
- **Dark Cyan** #008b8b [harmony, pool: triadic] — Dark Cyan completes a triad with #b311d0 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Peacock (https://brandsweets.com/palettes/vivid#peacock). — https://brandsweets.com/colors/darkcyan
- **Olive Green** #808000 [harmony: split] — Olive Green is a split-complement of #b311d0: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/olive
- **Sea Green** #2e8b57 [harmony: split] — Sea Green is a split-complement of #b311d0: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/seagreen
- **Medium Violet Red** #c71585 [harmony: analogous] — Medium Violet Red is #b311d0'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/mediumvioletred
- **Crimson** #dc143c [pool] — Crimson is paired with #b311d0 in Gemstone, as the accent. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone). — https://brandsweets.com/colors/crimson

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

- On white (#ffffff): 5.37:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #960eaf (7.05:1)
- On black (#000000): 3.91:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #c312e2 (4.51:1); AA: background → #ebebeb (4.51:1); AAA: text → #dd63f2 (7.14:1)

## 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/b311d0-bf9fc1-a4cb62-2d1f29-ece9f1?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: "#b311d0" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.