# #291bee

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

## Values

- Hex: `#291bee`
- RGB: rgb(41, 27, 238)
- HSL: hsl(244, 86%, 52%)
- OKLCH: oklch(0.452 0.282 269.1)
- Relative luminance: 0.0743
- Nearest named color: Bluebonnet (#1c1cf0, Δ 1.252) — https://brandsweets.com/colors/bluebonnet
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/291bee

## Tints & shades

- Tints (toward white): #4033f0, #5146f1, #685ef3, #7971f4, #9088f6, #a6a0f8, #b8b3f9, #cecbfb, #e0defd, #f6f6fe
- Shades (toward black): #1f11df, #1b0fc7, #190eb4, #150c9d, #120a85, #0f086d, #0c0655, #090542, #06032b, #030113

## Harmonies

- Complementary: #e0ee1b
- Analogous: #1b77ee, #931bee
- Triadic: #ee291b, #1bee29
- Split-complementary: #ee931b, #77ee1b
- Tetradic: #ee1b77, #e0ee1b, #1bee93

## Colors that go with #291bee

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

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #291bee: softer than #000 and cool enough to feel like part of the same palette. Seen in: Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Jeep (https://brandsweets.com/colors/brands/jeep-com), HP (https://brandsweets.com/colors/brands/hp-com), Campus (https://brandsweets.com/palettes/friendly#campus). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #291bee — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Behance (https://brandsweets.com/colors/brands/behance-net), Coinbase (https://brandsweets.com/colors/brands/coinbase). — https://brandsweets.com/colors/crimson
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #291bee: 10 real palettes, including CVS's brand system and Procter & Gamble's brand system, as the accent. Seen in: CVS (https://brandsweets.com/colors/brands/cvs-com), Procter & Gamble (https://brandsweets.com/colors/brands/pg-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), Zillow (https://brandsweets.com/colors/brands/zillow-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #291bee: 6 real palettes, including Qualcomm's brand system and Canva's brand system, as the supporting colour. Seen in: Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Canva (https://brandsweets.com/colors/brands/canva-com), Spotify (https://brandsweets.com/colors/brands/spotify), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono). — https://brandsweets.com/colors/cornflowerblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #291bee: 6 real palettes, including Activision's brand system and Pixar's brand system, as the supporting colour. Seen in: Activision (https://brandsweets.com/colors/brands/activision-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Unilever (https://brandsweets.com/colors/brands/unilever-com), Dairy Queen (https://brandsweets.com/colors/brands/dairyqueen-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #291bee: 7 real palettes, including Cargo's brand system and Readymag's brand system, as the lead colour. Seen in: Cargo (https://brandsweets.com/colors/brands/cargo-site), Readymag (https://brandsweets.com/colors/brands/readymag-com), Samsung (https://brandsweets.com/colors/brands/samsung-com), Unity (https://brandsweets.com/colors/brands/unity-com). — https://brandsweets.com/colors/dodgerblue
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #291bee: 4 real palettes, including 3M's brand system and MLB's brand system, as the supporting colour. Seen in: 3M (https://brandsweets.com/colors/brands/3m-com), MLB (https://brandsweets.com/colors/brands/mlb-com), Bose (https://brandsweets.com/colors/brands/bose-com), Nissan (https://brandsweets.com/colors/brands/nissanusa-com). — https://brandsweets.com/colors/firebrick
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #291bee in 5 real palettes, including Spotify's brand system and Unity's brand system, as the lead colour. Seen in: Spotify (https://brandsweets.com/colors/brands/spotify), Unity (https://brandsweets.com/colors/brands/unity-com), Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Console Light (https://brandsweets.com/palettes/technical#console-light). — https://brandsweets.com/colors/mediumseagreen

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

- On white (#ffffff): 8.45:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.49:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #6c62f3 (4.68:1); AA: background → #bfbfbf (4.59:1); AAA: text → #9088f6 (7.04:1); AAA: background → #ebebeb (7.09:1)

## Brands using this color

- **Qualcomm** — accent #2a2aea (Δ 1.547) — https://brandsweets.com/colors/brands/qualcomm-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/291bee-a39cc4-dfa24e-261f2d-e9edf1?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: "#291bee" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.