# #3fa739

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

## Values

- Hex: `#3fa739`
- RGB: rgb(63, 167, 57)
- HSL: hsl(117, 49%, 44%)
- OKLCH: oklch(0.645 0.177 142.4)
- Relative luminance: 0.2899
- Nearest named color: Fennel Fiasco (#00aa44, Δ 2.03) — https://brandsweets.com/colors/fennel-fiasco
- Moods: neutral
- Page: https://brandsweets.com/colors/3fa739

## Tints & shades

- Tints (toward white): #46ba40, #5ac454, #6ccb67, #82d37e, #94d991, #a7e0a4, #bde8bb, #cfeece, #e5f6e4, #f8fcf7
- Shades (toward black): #399834, #33892f, #2e7a2a, #286a24, #225b1f, #1d4c1a, #173d15, #112e10, #0b1e0a, #060f05

## Harmonies

- Complementary: #a239a7
- Analogous: #76a739, #39a76b
- Triadic: #393fa7, #a7393f
- Split-complementary: #6b39a7, #a73976
- Tetradic: #3976a7, #a239a7, #a76b39

## Colors that go with #3fa739

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Blue** #0000ff [pool] — 5 real palettes, including Spotify's brand system and Unity's brand system put Blue beside #3fa739, as the accent. Seen in: Spotify (https://brandsweets.com/colors/brands/spotify), Unity (https://brandsweets.com/colors/brands/unity-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Instacart (https://brandsweets.com/colors/brands/instacart-com). — https://brandsweets.com/colors/blue
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #3fa739: 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). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #3fa739 in 5 real palettes, including Console Light and Telehealth, as the lead colour. Seen in: Console Light (https://brandsweets.com/palettes/technical#console-light), Telehealth (https://brandsweets.com/palettes/modern#telehealth), Brilliant (https://brandsweets.com/colors/brands/brilliant-org), Khan Academy (https://brandsweets.com/colors/brands/khanacademy-org). — https://brandsweets.com/colors/royalblue
- **Taupe** #483c32 [pool] — Taupe is paired with #3fa739 in 9 real palettes, including Obsidian's brand system and Meadow, as the text colour against it. Seen in: Obsidian (https://brandsweets.com/colors/brands/obsidian-md), Meadow (https://brandsweets.com/palettes/light#meadow), Acer (https://brandsweets.com/colors/brands/acer-com), Undergrowth (https://brandsweets.com/palettes/dark#undergrowth). — https://brandsweets.com/colors/taupe
- **Medium Orchid** #ba55d3 [harmony: complementary] — Medium Orchid sits directly opposite #3fa739 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
- **Medium Purple** #9370db [harmony, pool: split] — Medium Purple is a split-complement of #3fa739: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Next.js (https://brandsweets.com/colors/brands/nextjs-org), Obsidian (https://brandsweets.com/colors/brands/obsidian-md). — https://brandsweets.com/colors/mediumpurple
- **Cornflower Blue** #6495ed [harmony, pool: triadic] — Cornflower Blue completes a triad with #3fa739 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Spotify (https://brandsweets.com/colors/brands/spotify), Terminal (https://brandsweets.com/palettes/technical#terminal). — https://brandsweets.com/colors/cornflowerblue
- **Dark Orange** #ff8c00 [pool] — Dark Orange shows up next to #3fa739 in 3 real palettes, including Playground and Citrus Grove, as the lead colour. Seen in: Playground (https://brandsweets.com/palettes/bold#playground), Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove), Learning App (https://brandsweets.com/palettes/playful#learning-app). — https://brandsweets.com/colors/darkorange

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

- On white (#ffffff): 3.09:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #32852e (4.64:1); AA: background → #2b2b2b (4.58:1); AAA: text → #256322 (7.28:1)
- On black (#000000): 6.8:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #40ab3b (7.11:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/3fa739-a2bea4-924edf-1f2d25-edf1e9?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: "#3fa739" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.