# #991bbb

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

## Values

- Hex: `#991bbb`
- RGB: rgb(153, 27, 187)
- HSL: hsl(287, 75%, 42%)
- OKLCH: oklch(0.512 0.233 317.3)
- Relative luminance: 0.1114
- Nearest named color: Nebula (#a104c3, Δ 2.13) — https://brandsweets.com/colors/nebula
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/991bbb

## Tints & shades

- Tints (toward white): #ae1fd6, #ba2de1, #c348e5, #ca5ee8, #d379ec, #dc94f0, #e3aaf3, #ecc5f7, #f3dbfa, #fcf6fe
- Shades (toward black): #8a18aa, #7c1698, #71148a, #621178, #540f67, #450c55, #370a43, #2c0836, #1d0524, #0f0312

## Harmonies

- Complementary: #3ebb1b
- Analogous: #481bbb, #bb1b8e
- Triadic: #bb991b, #1bbb99
- Split-complementary: #8ebb1b, #1bbb48
- Tetradic: #bb481b, #3ebb1b, #1b8ebb

## Colors that go with #991bbb

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

- **Denim** #1560bd [pool] — Designers have shipped Denim with #991bbb: 4 real palettes, including Peacock and Hasbro's brand system, as the supporting colour. Seen in: Peacock (https://brandsweets.com/palettes/vivid#peacock), Hasbro (https://brandsweets.com/colors/brands/hasbro-com), Linkedin (https://brandsweets.com/colors/brands/linkedin-com), Slack (https://brandsweets.com/colors/brands/slack-com). — https://brandsweets.com/colors/denim
- **Forest Green** #228b22 [harmony: complementary] — Forest Green sits directly opposite #991bbb 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
- **Sea Green** #2e8b57 [harmony, pool: split] — Sea Green is a split-complement of #991bbb: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Next.js (https://brandsweets.com/colors/brands/nextjs-org). — https://brandsweets.com/colors/seagreen
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #991bbb: 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
- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #991bbb — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone). — https://brandsweets.com/colors/teal
- **Olive Green** #808000 [harmony: split] — Olive Green is a split-complement of #991bbb: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/olive
- **Light Sea Green** #20b2aa [pool] — Light Sea Green shows up next to #991bbb in two real palettes: Taco Bell's brand system and Circuit, as the accent. Seen in: Taco Bell (https://brandsweets.com/colors/brands/tacobell-com), Circuit (https://brandsweets.com/palettes/technical#circuit). — https://brandsweets.com/colors/lightseagreen
- **Taupe** #483c32 [pool] — Taupe is paired with #991bbb in two real palettes: Superhuman's brand system and Datadog's brand system, as the lead colour. Seen in: Superhuman (https://brandsweets.com/colors/brands/superhuman-com), Datadog (https://brandsweets.com/colors/brands/datadoghq-com). — https://brandsweets.com/colors/taupe

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

- On white (#ffffff): 6.5:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #9119b3 (7.01:1)
- On black (#000000): 3.23:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #ba2de1 (4.55:1); AA: background → #d9d9d9 (4.61:1); AAA: text → #d070eb (7.2:1)

## 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/991bbb-bd9fc1-abcb62-2d1f2a-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: "#991bbb" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.