# #866aa4

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

## Values

- Hex: `#866aa4`
- RGB: rgb(134, 106, 164)
- HSL: hsl(269, 24%, 53%)
- OKLCH: oklch(0.574 0.092 305.8)
- Relative luminance: 0.1806
- Nearest named color: Crown Jewels (#946dad, Δ 2.835) — https://brandsweets.com/colors/crown-jewels
- Moods: cool, muted
- Page: https://brandsweets.com/colors/866aa4

## Tints & shades

- Tints (toward white): #937aae, #9d87b5, #aa97bf, #b4a3c7, #c1b3d0, #ccc0d8, #d8d0e2, #e3dcea, #f0ecf3, #faf9fb
- Shades (toward black): #795d98, #6d5388, #604a78, #534068, #49385c, #3d2f4c, #30253c, #231b2c, #17111c, #0a080d

## Harmonies

- Complementary: #88a46a
- Analogous: #6a6ba4, #a36aa4
- Triadic: #a4866a, #6aa486
- Split-complementary: #a4a36a, #6ba46a
- Tetradic: #a46a6b, #88a46a, #6aa4a3

## Colors that go with #866aa4

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 #866aa4: 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
- **Denim** #1560bd [pool] — Designers have shipped Denim with #866aa4: 5 real palettes, including Campus and The New York Times's brand system, as the lead colour. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), The New York Times (https://brandsweets.com/colors/brands/nytimes-com), 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 Marvel's brand system and Plaid's brand system put Midnight Blue beside #866aa4, as the supporting colour. Seen in: Marvel (https://brandsweets.com/colors/brands/marvel-com), Plaid (https://brandsweets.com/colors/brands/plaid-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com). — https://brandsweets.com/colors/midnightblue
- **Taupe** #483c32 [pool] — Taupe is paired with #866aa4 in 10 real palettes, including Graphite Mono and Superhuman's brand system, as the lead colour. Seen in: Graphite Mono (https://brandsweets.com/palettes/neutral#graphite-mono), Superhuman (https://brandsweets.com/colors/brands/superhuman-com), Greige (https://brandsweets.com/palettes/neutral#greige), Typewriter (https://brandsweets.com/palettes/editorial#typewriter). — https://brandsweets.com/colors/taupe
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #866aa4 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
- **Sea Green** #2e8b57 [harmony, pool: split] — Sea Green is a split-complement of #866aa4: 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). — https://brandsweets.com/colors/seagreen
- **Copper** #b87333 [harmony, pool: triadic] — Copper completes a triad with #866aa4 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Atelier (https://brandsweets.com/palettes/elegant#atelier). — https://brandsweets.com/colors/copper
- **Rust** #b7410e [pool] — Rust shows up next to #866aa4 in 3 real palettes, including Semrush's brand system and Gallery, as the accent. Seen in: Semrush (https://brandsweets.com/colors/brands/semrush-com), Gallery (https://brandsweets.com/palettes/editorial#gallery), Noir Beauty (https://brandsweets.com/palettes/dark#noir-beauty). — https://brandsweets.com/colors/rust

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

- On white (#ffffff): 4.55:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #654e7e (7.13:1)
- On black (#000000): 4.61:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #a28db9 (7.05:1)

## Brands using this color

- **Semrush** — secondary #8467aa (Δ 1.438) — https://brandsweets.com/colors/brands/semrush-com

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/866aa4-b49cc4-cbcb62-2c1f2d-e9e9f1?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: "#866aa4" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.