# #51905c

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

## Values

- Hex: `#51905c`
- RGB: rgb(81, 144, 92)
- HSL: hsl(130, 28%, 44%)
- OKLCH: oklch(0.597 0.102 148.3)
- Relative luminance: 0.2247
- Nearest named color: Illuminati Green (#419168, Δ 1.854) — https://brandsweets.com/colors/illuminati-green
- Moods: muted
- Page: https://brandsweets.com/colors/51905c

## Tints & shades

- Tints (toward white): #5aa066, #6cac77, #7cb686, #90c198, #a0caa7, #b1d3b6, #c4dec9, #d5e7d8, #e8f2ea, #f8fbf9
- Shades (toward black): #498353, #42764b, #3b6842, #335b3a, #2c4e32, #254129, #1d3421, #162719, #0f1a11, #070d08

## Harmonies

- Complementary: #905185
- Analogous: #669051, #51907b
- Triadic: #5b5190, #905b51
- Split-complementary: #7b5190, #905166
- Tetradic: #516690, #905185, #907b51

## Colors that go with #51905c

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 #51905c: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Asana (https://brandsweets.com/colors/brands/asana-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Coastal (https://brandsweets.com/palettes/cool#coastal). — https://brandsweets.com/colors/charcoal
- **Blue** #0000ff [pool] — 4 real palettes, including Kia's brand system and Instacart's brand system put Blue beside #51905c, as the accent. Seen in: Kia (https://brandsweets.com/colors/brands/kia-com), Instacart (https://brandsweets.com/colors/brands/instacart-com), Rolex (https://brandsweets.com/colors/brands/rolex-com), Warp (https://brandsweets.com/colors/brands/warp-dev). — https://brandsweets.com/colors/blue
- **Copper** #b87333 [pool] — Designers have shipped Copper with #51905c: 5 real palettes, including Wellness and Clean Beauty, as the supporting colour. Seen in: Wellness (https://brandsweets.com/palettes/warm#wellness), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty), Riverbed (https://brandsweets.com/palettes/muted#riverbed), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #51905c in 7 real palettes, including Five Guys's brand system and Netflix's brand system, as the supporting colour. Seen in: Five Guys (https://brandsweets.com/colors/brands/fiveguys-com), Netflix (https://brandsweets.com/colors/brands/netflix), Coinbase (https://brandsweets.com/colors/brands/coinbase), Diner (https://brandsweets.com/palettes/vivid#diner). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #51905c: 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
- **Midnight Blue** #191970 [pool] — 4 real palettes, including Paramount+'s brand system and Tide Pool put Midnight Blue beside #51905c, as the supporting colour. Seen in: Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Telehealth (https://brandsweets.com/palettes/modern#telehealth). — https://brandsweets.com/colors/midnightblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #51905c in 5 real palettes, including Subaru's brand system and Coinbase's brand system, as the supporting colour. Seen in: Subaru (https://brandsweets.com/colors/brands/subaru-com), Coinbase (https://brandsweets.com/colors/brands/coinbase), Console Light (https://brandsweets.com/palettes/technical#console-light), Telehealth (https://brandsweets.com/palettes/modern#telehealth). — https://brandsweets.com/colors/royalblue
- **Steel Blue** #4682b4 [harmony, pool: triadic] — Steel Blue completes a triad with #51905c — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Olympics (https://brandsweets.com/colors/brands/olympics-com). — https://brandsweets.com/colors/steelblue

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

- On white (#ffffff): 3.82:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #498353 (4.51:1); AA: background → #1a1a1a (4.55:1); AAA: text → #37623e (7.05:1)
- On black (#000000): 5.49:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #5fa56b (7.08:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/51905c-a2beaa-b14edf-1f2d28-ecf1e9?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: "#51905c" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.