# #666e63

A color — neutral, minimal. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#666e63`
- RGB: rgb(102, 110, 99)
- HSL: hsl(104, 5%, 41%)
- OKLCH: oklch(0.528 0.02 137.1)
- Relative luminance: 0.1488
- Nearest named color: Armoury (#6a6b65, Δ 1.187) — https://brandsweets.com/colors/armoury
- Moods: neutral, minimal
- Page: https://brandsweets.com/colors/666e63

## Tints & shades

- Tints (toward white): #757e72, #828b7e, #91998f, #a1a89f, #b1b6af, #bec2bc, #cdd1cc, #dde0dc, #eaecea, #fafafa
- Shades (toward black): #5c635a, #555b52, #4b5049, #41463f, #393e38, #2f332e, #252824, #1b1d1b, #141513, #0a0b0a

## Harmonies

- Complementary: #6b636e
- Analogous: #6b6e63, #636e66
- Triadic: #63666e, #6e6366
- Split-complementary: #66636e, #6e636b
- Tetradic: #636b6e, #6b636e, #6e6663

## Colors that go with #666e63

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 that reads cleanly against #666e63 without the hard edge of pure #000. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), Gusto (https://brandsweets.com/colors/brands/gusto-com), Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Canopy (https://brandsweets.com/palettes/cool#canopy). — https://brandsweets.com/colors/charcoal
- **Champagne** #f7e7ce [pool] — 6 real palettes, including Forest Floor and BrandSweets's brand system put Champagne beside #666e63, as that palette's text colour. Seen in: Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke). — https://brandsweets.com/colors/champagne
- **Copper** #b87333 [pool] — Designers have shipped Copper with #666e63: 8 real palettes, including Riverbed and Clay & Linen, as the accent. Seen in: Riverbed (https://brandsweets.com/palettes/muted#riverbed), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen), Wellness (https://brandsweets.com/palettes/warm#wellness), Desert Road (https://brandsweets.com/palettes/warm#desert-road). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #666e63 in 7 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), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #666e63: 9 real palettes, including Campus and Intel's brand system, as the lead colour. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), 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). — https://brandsweets.com/colors/denim
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #666e63 in 7 real palettes, including Mid-Century and Harvest, as the accent. Seen in: 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), Fireside (https://brandsweets.com/palettes/dark#fireside). — https://brandsweets.com/colors/goldenrod
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #666e63 in 4 real palettes, including Undergrowth and Indigo SaaS, as the lead colour. Seen in: Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Console Light (https://brandsweets.com/palettes/technical#console-light), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/mediumseagreen
- **Midnight Blue** #191970 [pool] — 6 real palettes, including Lufthansa's brand system and Paramount+'s brand system put Midnight Blue beside #666e63, as the lead colour. Seen in: Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com), Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/midnightblue

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

- On white (#ffffff): 5.28:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #525850 (7.32:1)
- On black (#000000): 3.98:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #70786d (4.6:1); AA: background → #ededed (4.51:1); AAA: text → #91998f (7.16:1)

## Fonts for this mood

- neutral: https://brandsweets.com/fonts/mood/neutral
- minimal: https://brandsweets.com/fonts/mood/minimal

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/666e63-a2beb0-c859d4-1f2d2b-eaf1e9?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: "#666e63" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.