# #866f9b

A color — cool, muted. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#866f9b`
- RGB: rgb(134, 111, 155)
- HSL: hsl(271, 18%, 52%)
- OKLCH: oklch(0.58 0.071 308.1)
- Relative luminance: 0.188
- Nearest named color: Nymph’s Delight (#7b6c8e, Δ 2.785) — https://brandsweets.com/colors/nymphs-delight
- Moods: cool, muted
- Page: https://brandsweets.com/colors/866f9b

## Tints & shades

- Tints (toward white): #927ea5, #9c8aad, #a999b8, #b3a5c0, #c0b4cb, #ccc3d5, #d6cfde, #e3dee8, #edeaf0, #faf9fb
- Shades (toward black): #79628d, #6c587e, #614f72, #554563, #483b54, #3b3045, #2e2636, #241d2a, #17131b, #0a080c

## Harmonies

- Complementary: #849b6f
- Analogous: #6f6f9b, #9b6f9a
- Triadic: #9b856f, #6f9b85
- Split-complementary: #9a9b6f, #6f9b6f
- Tetradic: #9b6f6f, #849b6f, #6f9a9b

## Colors that go with #866f9b

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 #866f9b: softer than #000 and cool enough to feel like part of the same palette. Seen in: Plaid (https://brandsweets.com/colors/brands/plaid-com), Campus (https://brandsweets.com/palettes/friendly#campus), Bloomberg (https://brandsweets.com/colors/brands/bloomberg-com), Hermès (https://brandsweets.com/colors/brands/hermes-com). — https://brandsweets.com/colors/charcoal
- **Copper** #b87333 [harmony, pool: triadic] — Copper completes a triad with #866f9b — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Atelier (https://brandsweets.com/palettes/elegant#atelier), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen), Dusk (https://brandsweets.com/palettes/cool#dusk), Riverbed (https://brandsweets.com/palettes/muted#riverbed). — https://brandsweets.com/colors/copper
- **Denim** #1560bd [pool] — Designers have shipped Denim with #866f9b: 5 real palettes, including Campus and Dusk, as the lead colour. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), Dusk (https://brandsweets.com/palettes/cool#dusk), American Express (https://brandsweets.com/colors/brands/americanexpress-com), Discover (https://brandsweets.com/colors/brands/discover-com). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 6 real palettes, including Plaid's brand system and Marvel's brand system put Midnight Blue beside #866f9b, as the supporting colour. Seen in: Plaid (https://brandsweets.com/colors/brands/plaid-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com). — https://brandsweets.com/colors/midnightblue
- **Peru** #cd853f [pool] — 4 real palettes, including Coffee Bar and Estate put Peru beside #866f9b, as the lead colour. Seen in: Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Estate (https://brandsweets.com/palettes/luxury#estate), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), Kiln (https://brandsweets.com/palettes/dark#kiln). — https://brandsweets.com/colors/peru
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #866f9b in 4 real palettes, including Slate Workspace and Stripe's brand system, as the accent. Seen in: Slate Workspace (https://brandsweets.com/palettes/minimal#slate-workspace), Stripe (https://brandsweets.com/colors/brands/stripe), GitHub (https://brandsweets.com/colors/brands/github), Subaru (https://brandsweets.com/colors/brands/subaru-com). — https://brandsweets.com/colors/royalblue
- **Sea Green** #2e8b57 [harmony, pool: split] — Sea Green is a split-complement of #866f9b: 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), Mushroom (https://brandsweets.com/palettes/neutral#mushroom), Subaru (https://brandsweets.com/colors/brands/subaru-com). — https://brandsweets.com/colors/seagreen
- **Taupe** #483c32 [pool] — Taupe is paired with #866f9b in 19 real palettes, including Graphite Mono and Greige, as the lead colour. Seen in: Graphite Mono (https://brandsweets.com/palettes/neutral#graphite-mono), Greige (https://brandsweets.com/palettes/neutral#greige), Typewriter (https://brandsweets.com/palettes/editorial#typewriter), Mushroom (https://brandsweets.com/palettes/neutral#mushroom). — https://brandsweets.com/colors/taupe

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

- On white (#ffffff): 4.41:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #836c99 (4.6:1); AA: background → #080808 (4.54:1); AAA: text → #614f72 (7.32:1)
- On black (#000000): 4.76:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #a190b2 (7.15:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/866f9b-b59cc4-c7cb62-2c1f2d-eae9f1?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: "#866f9b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.