# #66546d

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

## Values

- Hex: `#66546d`
- RGB: rgb(102, 84, 109)
- HSL: hsl(283, 13%, 38%)
- OKLCH: oklch(0.473 0.045 316.5)
- Relative luminance: 0.1027
- Nearest named color: Fedora (#625665, Δ 1.754) — https://brandsweets.com/colors/fedora
- Moods: cool, muted
- Page: https://brandsweets.com/colors/66546d

## Tints & shades

- Tints (toward white): #77627f, #876f90, #95809d, #a492ab, #b2a3b8, #c0b4c5, #cfc5d3, #ddd7e0, #ece8ed, #faf9fb
- Shades (toward black): #5e4e65, #544559, #4b3e51, #413545, #392f3d, #302834, #261f28, #1e1820, #131014, #0b090c

## Harmonies

- Complementary: #5b6d54
- Analogous: #5a546d, #6d5468
- Triadic: #6d6654, #546d66
- Split-complementary: #686d54, #546d5a
- Tetradic: #6d5a54, #5b6d54, #54686d

## Colors that go with #66546d

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 #66546d: softer than #000 and cool enough to feel like part of the same palette. Seen in: Harbour (https://brandsweets.com/palettes/cool#harbour), Campus (https://brandsweets.com/palettes/friendly#campus), Tumblr (https://brandsweets.com/colors/brands/tumblr-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-com). — https://brandsweets.com/colors/charcoal
- **Teal** #008080 [harmony, pool: split] — Teal is a split-complement of #66546d: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre), Clinic (https://brandsweets.com/palettes/clean#clinic), Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Gusto (https://brandsweets.com/colors/brands/gusto-com). — https://brandsweets.com/colors/teal
- **Sea Green** #2e8b57 [harmony, pool: complementary] — Sea Green sits directly opposite #66546d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Subaru (https://brandsweets.com/colors/brands/subaru-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/seagreen
- **Champagne** #f7e7ce [pool] — 5 real palettes, including BrandSweets's brand system and Darkroom put Champagne beside #66546d. Seen in: BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Darkroom (https://brandsweets.com/palettes/muted#darkroom), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Bramble (https://brandsweets.com/palettes/muted#bramble). — https://brandsweets.com/colors/champagne
- **Copper** #b87333 [pool] — Designers have shipped Copper with #66546d: 6 real palettes, including Dusk and Desert Road, as the accent. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Desert Road (https://brandsweets.com/palettes/warm#desert-road), Bakery (https://brandsweets.com/palettes/warm#bakery), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen). — https://brandsweets.com/colors/copper
- **Denim** #1560bd [pool] — Designers have shipped Denim with #66546d: 7 real palettes, including HP's brand system and The New York Times's brand system, as the accent. Seen in: HP (https://brandsweets.com/colors/brands/hp-com), The New York Times (https://brandsweets.com/colors/brands/nytimes-com), Campus (https://brandsweets.com/palettes/friendly#campus), Hinge (https://brandsweets.com/colors/brands/hinge-co). — https://brandsweets.com/colors/denim
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #66546d in 4 real palettes, including Open House and Mid-Century, as the accent. Seen in: Open House (https://brandsweets.com/palettes/clean#open-house), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Fireside (https://brandsweets.com/palettes/dark#fireside), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold). — https://brandsweets.com/colors/goldenrod
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #66546d in 4 real palettes, including Console Light and Undergrowth, as the accent. Seen in: Console Light (https://brandsweets.com/palettes/technical#console-light), Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/mediumseagreen

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

- On white (#ffffff): 6.88:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #64526b (7.09:1)
- On black (#000000): 3.05:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #846d8d (4.55:1); AA: background → #d1d1d1 (4.5:1); AAA: text → #a18fa8 (7.01:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/66546d-bb9fc1-b2cb62-2d1f2b-ebe9f1?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: "#66546d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.