# #b31dcd

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

## Values

- Hex: `#b31dcd`
- RGB: rgb(179, 29, 205)
- HSL: hsl(291, 75%, 46%)
- OKLCH: oklch(0.564 0.254 320.8)
- Relative luminance: 0.1487
- Nearest named color: Ferocious Fuchsia (#aa00cc, Δ 2.584) — https://brandsweets.com/colors/ferocious-fuchsia
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/b31dcd

## Tints & shades

- Tints (toward white): #c424e0, #ca3be3, #d155e7, #d76cea, #dd82ed, #e398f0, #e9aff4, #f0c9f7, #f7e0fb, #fdf6fe
- Shades (toward black): #a31bbb, #9418aa, #801593, #711281, #611070, #520d5e, #420b4c, #2f0836, #1f0524, #100312

## Harmonies

- Complementary: #38cd1d
- Analogous: #5b1dcd, #cd1d90
- Triadic: #cdb31d, #1dcdb3
- Split-complementary: #90cd1d, #1dcd5b
- Tetradic: #cd5b1d, #38cd1d, #1d90cd

## Colors that go with #b31dcd

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 #b31dcd 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 #b31dcd: 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 #b31dcd: 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 #b31dcd — 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 #b31dcd: 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 #b31dcd: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/seagreen
- **Crimson** #dc143c [pool] — Crimson is paired with #b31dcd in two real palettes: Gemstone and The Ordinary's brand system, as the accent. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), The Ordinary (https://brandsweets.com/colors/brands/theordinary-com). — https://brandsweets.com/colors/crimson
- **Medium Violet Red** #c71585 [harmony: analogous] — Medium Violet Red is #b31dcd'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

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

- On white (#ffffff): 5.28:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #9418aa (7.07:1)
- On black (#000000): 3.97:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #c220df (4.57:1); AA: background → #ededed (4.51:1); AAA: text → #d76cea (7.22:1)

## 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/b31dcd-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: "#b31dcd" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.