# #399a09

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

## Values

- Hex: `#399a09`
- RGB: rgb(57, 154, 9)
- HSL: hsl(100, 89%, 32%)
- OKLCH: oklch(0.605 0.187 139)
- Relative luminance: 0.24
- Nearest named color: Grass Is Greener (#3f9b0b, Δ 0.569) — https://brandsweets.com/colors/grass-is-greener
- Moods: vivid
- Page: https://brandsweets.com/colors/399a09

## Tints & shades

- Tints (toward white): #46bc0b, #51d90d, #60f218, #74f335, #8bf556, #a2f778, #b6f995, #cdfbb7, #e1fcd4, #f8fef5
- Shades (toward black): #348c08, #2f7d07, #2b7407, #266506, #205705, #1b4804, #163a03, #123003, #0d2202, #071301

## Harmonies

- Complementary: #6a099a
- Analogous: #829a09, #099a21
- Triadic: #09399a, #9a0939
- Split-complementary: #21099a, #9a0982
- Tetradic: #09829a, #6a099a, #9a2109

## Colors that go with #399a09

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

- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #399a09 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: DuckDuckGo (https://brandsweets.com/colors/brands/duckduckgo-com), Coinbase (https://brandsweets.com/colors/brands/coinbase), Five Guys (https://brandsweets.com/colors/brands/fiveguys-com), Netflix (https://brandsweets.com/colors/brands/netflix). — https://brandsweets.com/colors/crimson
- **Royal Blue** #4169e1 [harmony, pool: triadic] — Royal Blue completes a triad with #399a09 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Console Light (https://brandsweets.com/palettes/technical#console-light), Telehealth (https://brandsweets.com/palettes/modern#telehealth), Xbox (https://brandsweets.com/colors/brands/xbox-com), Coinbase (https://brandsweets.com/colors/brands/coinbase). — https://brandsweets.com/colors/royalblue
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #399a09: 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), Asana (https://brandsweets.com/colors/brands/asana-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/charcoal
- **Denim** #1560bd [pool] — Designers have shipped Denim with #399a09: 5 real palettes, including Xbox's brand system and Intel's brand system, as the supporting colour. Seen in: Xbox (https://brandsweets.com/colors/brands/xbox-com), 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
- **Medium Orchid** #ba55d3 [harmony: complementary] — Medium Orchid sits directly opposite #399a09 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 Violet Red** #c71585 [harmony, pool: split] — Medium Violet Red is a split-complement of #399a09: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Bun (https://brandsweets.com/colors/brands/bun-sh). — https://brandsweets.com/colors/mediumvioletred
- **Blue** #0000ff [pool] — 3 real palettes, including Instacart's brand system and Kia's brand system put Blue beside #399a09, as the accent. Seen in: Instacart (https://brandsweets.com/colors/brands/instacart-com), Kia (https://brandsweets.com/colors/brands/kia-com), Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/blue
- **Midnight Blue** #191970 [pool] — 3 real palettes, including Telehealth and Fintech Trust put Midnight Blue beside #399a09, as the text colour against it. Seen in: Telehealth (https://brandsweets.com/palettes/modern#telehealth), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com). — https://brandsweets.com/colors/midnightblue

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

- On white (#ffffff): 3.62:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #328708 (4.56:1); AA: background → #1f1f1f (4.55:1); AAA: text → #266506 (7.13:1)
- On black (#000000): 5.8:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #41ae0a (7.28:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/399a09-a8bea2-694edf-1f2d21-f0f1e9?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: "#399a09" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.