# #51664d

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

## Values

- Hex: `#51664d`
- RGB: rgb(81, 102, 77)
- HSL: hsl(110, 14%, 35%)
- OKLCH: oklch(0.486 0.047 140.6)
- Relative luminance: 0.1179
- Nearest named color: Black Forest (#5e6354, Δ 2.548) — https://brandsweets.com/colors/black-forest
- Moods: muted
- Page: https://brandsweets.com/colors/51664d

## Tints & shades

- Tints (toward white): #5f775a, #6f8c69, #7f9a79, #8fa78b, #a3b79f, #b4c4b1, #c4d1c2, #d5ded3, #e9ede8, #f9fbf9
- Shades (toward black): #4a5d46, #435440, #3c4c39, #354332, #2e3a2c, #252f23, #1e261d, #171d16, #10140f, #090c09

## Harmonies

- Complementary: #624d66
- Analogous: #5d664d, #4d6655
- Triadic: #4d5166, #664d51
- Split-complementary: #554d66, #664d5d
- Tetradic: #4d5d66, #624d66, #66554d

## Colors that go with #51664d

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 body-text near-black for #51664d: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Canopy (https://brandsweets.com/palettes/cool#canopy), Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Pampers (https://brandsweets.com/colors/brands/pampers-com), Gusto (https://brandsweets.com/colors/brands/gusto-com). — https://brandsweets.com/colors/charcoal
- **Slate Blue** #6a5acd [harmony, pool: complementary] — Slate Blue sits directly opposite #51664d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas). — https://brandsweets.com/colors/slateblue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #51664d: 4 real palettes, including Alpine and Paper & Pine, as the supporting colour. Seen in: Alpine (https://brandsweets.com/palettes/cool#alpine), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), Open House (https://brandsweets.com/palettes/clean#open-house), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/cadetblue
- **Champagne** #f7e7ce [pool] — 5 real palettes, including BrandSweets's brand system and Darkroom put Champagne beside #51664d. Seen in: BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Darkroom (https://brandsweets.com/palettes/muted#darkroom), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar). — https://brandsweets.com/colors/champagne
- **Copper** #b87333 [pool] — Designers have shipped Copper with #51664d: 6 real palettes, including Clay & Linen and Desert Road, as the lead colour. Seen in: Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen), Desert Road (https://brandsweets.com/palettes/warm#desert-road), Riverbed (https://brandsweets.com/palettes/muted#riverbed), Wellness (https://brandsweets.com/palettes/warm#wellness). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #51664d in 6 real palettes, including Gemstone and Five Guys's brand system, as the accent. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Five Guys (https://brandsweets.com/colors/brands/fiveguys-com), Netflix (https://brandsweets.com/colors/brands/netflix), Coinbase (https://brandsweets.com/colors/brands/coinbase). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #51664d: 8 real palettes, including Intel's brand system and Jack Daniel's's brand system, as the supporting colour. Seen in: Intel (https://brandsweets.com/colors/brands/intel-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Netflix (https://brandsweets.com/colors/brands/netflix), Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com). — https://brandsweets.com/colors/denim
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #51664d in 5 real palettes, including Fireside and Mid-Century, as the accent. Seen in: Fireside (https://brandsweets.com/palettes/dark#fireside), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Harvest (https://brandsweets.com/palettes/warm#harvest), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold). — https://brandsweets.com/colors/goldenrod

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

- On white (#ffffff): 6.25:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #4a5d46 (7.13:1)
- On black (#000000): 3.36:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #637d5e (4.63:1); AA: background → #dbdbdb (4.52:1); AAA: text → #849f7f (7.25:1)

## Curated palettes containing it

- **Undergrowth** (forest, dark, muted, earthy) — #7fb069, #5a6650, #e6aa68, #1b2a1f, #e9efe6 — Fern and lichen with a fungus orange on a fir-black — the forest floor at dusk, as a dark theme. — tool: https://brandsweets.com/palettes/new/7fb069-5a6650-e6aa68-1b2a1f-e9efe6 — collection: https://brandsweets.com/palettes/forest

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/51664d-a3bea2-814edf-1f2d23-eef1e9?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: "#51664d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.