# #669e57

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

## Values

- Hex: `#669e57`
- RGB: rgb(102, 158, 87)
- HSL: hsl(107, 29%, 48%)
- OKLCH: oklch(0.643 0.117 139.2)
- Relative luminance: 0.2797
- Nearest named color: Bavarian Green (#749a54, Δ 1.78) — https://brandsweets.com/colors/bavarian-green
- Moods: muted
- Page: https://brandsweets.com/colors/669e57

## Tints & shades

- Tints (toward white): #73aa64, #82b375, #91bc85, #a0c596, #afcea6, #bed7b7, #cde0c7, #dbe9d8, #eaf2e8, #f9fbf8
- Shades (toward black): #5e9150, #538047, #4b733f, #406336, #37562f, #2f4828, #24381f, #1c2b18, #111a0e, #090d07

## Harmonies

- Complementary: #8f579e
- Analogous: #8a9e57, #579e6b
- Triadic: #57669e, #9e5766
- Split-complementary: #6b579e, #9e578a
- Tetradic: #578a9e, #8f579e, #9e6b57

## Colors that go with #669e57

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 #669e57: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Zendesk (https://brandsweets.com/colors/brands/zendesk-com), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), N26 (https://brandsweets.com/colors/brands/n26-com), Coastal (https://brandsweets.com/palettes/cool#coastal). — https://brandsweets.com/colors/charcoal
- **Blue** #0000ff [pool] — 7 real palettes, including Unity's brand system and Spotify's brand system put Blue beside #669e57, as the supporting colour. Seen in: Unity (https://brandsweets.com/colors/brands/unity-com), Spotify (https://brandsweets.com/colors/brands/spotify), Kia (https://brandsweets.com/colors/brands/kia-com), Rolex (https://brandsweets.com/colors/brands/rolex-com). — https://brandsweets.com/colors/blue
- **Copper** #b87333 [pool] — Designers have shipped Copper with #669e57: 4 real palettes, including Clean Beauty and Wellness, as the accent. Seen in: Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty), Wellness (https://brandsweets.com/palettes/warm#wellness), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen), Atelier (https://brandsweets.com/palettes/elegant#atelier). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #669e57 in 5 real palettes, including DuckDuckGo's brand system and Diner, as the supporting colour. Seen in: DuckDuckGo (https://brandsweets.com/colors/brands/duckduckgo-com), Diner (https://brandsweets.com/palettes/vivid#diner), Five Guys (https://brandsweets.com/colors/brands/fiveguys-com), Netflix (https://brandsweets.com/colors/brands/netflix). — https://brandsweets.com/colors/crimson
- **Dark Olive Green** #556b2f [pool] — Dark Olive Green shows up next to #669e57 in 4 real palettes, including Undergrowth and Forest Floor, as the supporting colour. Seen in: Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Olive Grove (https://brandsweets.com/palettes/muted#olive-grove), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen). — https://brandsweets.com/colors/darkolivegreen
- **Denim** #1560bd [pool] — Designers have shipped Denim with #669e57: 6 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
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #669e57: 4 real palettes, including Spline's brand system and Unity's brand system, as the lead colour. Seen in: Spline (https://brandsweets.com/colors/brands/spline-design), Unity (https://brandsweets.com/colors/brands/unity-com), Playground (https://brandsweets.com/palettes/bold#playground), Studio Grey (https://brandsweets.com/palettes/minimal#studio-grey). — https://brandsweets.com/colors/dodgerblue
- **Medium Orchid** #ba55d3 [harmony: complementary] — Medium Orchid sits directly opposite #669e57 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/mediumorchid

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

- On white (#ffffff): 3.19:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #538047 (4.62:1); AA: background → #292929 (4.57:1); AAA: text → #3e5f35 (7.26:1)
- On black (#000000): 6.59:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #6ba45b (7.09:1)

## Brands using this color

- **Spline** — secondary #6a9955 (Δ 1.414) — https://brandsweets.com/colors/brands/spline-design

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/669e57-a5bea2-7a4edf-1f2d22-eff1e9?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: "#669e57" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.