# #866feb

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

## Values

- Hex: `#866feb`
- RGB: rgb(134, 111, 235)
- HSL: hsl(251, 76%, 68%)
- OKLCH: oklch(0.623 0.18 288.6)
- Relative luminance: 0.2244
- Nearest named color: mediumslateblue (#7b68ee, Δ 2.568) — https://brandsweets.com/colors/mediumslateblue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/866feb

## Tints & shades

- Tints (toward white): #917ded, #9d8aef, #a898f1, #b3a5f3, #bfb3f5, #cac0f6, #d5cef8, #e1dbfa, #ece9fc, #f7f6fe
- Shades (toward black): #6f54e8, #5535e3, #411edc, #381abc, #3016a2, #281287, #1e0e67, #160a4c, #0d062d, #050212

## Harmonies

- Complementary: #d5eb6f
- Analogous: #6f97eb, #c46feb
- Triadic: #eb866f, #6feb86
- Split-complementary: #ebc46f, #97eb6f
- Tetradic: #eb6f97, #d5eb6f, #6febc4

## Colors that go with #866feb

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

- **Amber** #ffbf00 [pool] — Amber is paired with #866feb in 4 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), Google (https://brandsweets.com/colors/brands/google-com), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 8 real palettes, including Qualcomm's brand system and Readymag's brand system put Blue beside #866feb, as the accent. Seen in: Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Penpot (https://brandsweets.com/colors/brands/penpot-app), Cargo (https://brandsweets.com/colors/brands/cargo-site). — https://brandsweets.com/colors/blue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #866feb: 6 real palettes, including Calm's brand system and Blueprint, as the lead colour. Seen in: Calm (https://brandsweets.com/colors/brands/calm-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Patreon (https://brandsweets.com/colors/brands/patreon-com), Venmo (https://brandsweets.com/colors/brands/venmo-com). — https://brandsweets.com/colors/deepskyblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #866feb: 6 real palettes, including Coursera's brand system and Linkedin's brand system, as the accent. Seen in: Coursera (https://brandsweets.com/colors/brands/coursera-org), Linkedin (https://brandsweets.com/colors/brands/linkedin-com), Fivetran blue (https://brandsweets.com/colors/brands/fivetran-com), Guinness (https://brandsweets.com/colors/brands/guinness-com). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 6 real palettes, including Lavender Haze and Discord's brand system put Midnight Blue beside #866feb, as that palette's text colour. Seen in: Lavender Haze (https://brandsweets.com/palettes/playful#lavender-haze), Discord (https://brandsweets.com/colors/brands/discord), Marvel (https://brandsweets.com/colors/brands/marvel-com), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/midnightblue
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #866feb in 5 real palettes, including Google's brand system and Clerk's brand system, as the supporting colour. Seen in: Google (https://brandsweets.com/colors/brands/google-com), Clerk (https://brandsweets.com/colors/brands/clerk-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Replit (https://brandsweets.com/colors/brands/replit). — https://brandsweets.com/colors/orangered
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #866feb: softer than #000 and cool enough to feel like part of the same palette. Seen in: Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/charcoal
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #866feb 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/olive

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

- On white (#ffffff): 3.83:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #775de9 (4.64:1); AA: background → #1a1a1a (4.55:1); AAA: text → #5131e3 (7.25:1)
- On black (#000000): 5.49:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #9d8aef (7.32:1)

## 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/866feb-a89cc4-dfb34e-281f2d-e9ecf1?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: "#866feb" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.