# #278b40

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

## Values

- Hex: `#278b40`
- RGB: rgb(39, 139, 64)
- HSL: hsl(135, 56%, 35%)
- OKLCH: oklch(0.562 0.144 147.8)
- Relative luminance: 0.1927
- Nearest named color: Overgrown Mausoleum (#448833, Δ 2.054) — https://brandsweets.com/colors/overgrown-mausoleum
- Moods: neutral
- Page: https://brandsweets.com/colors/278b40

## Tints & shades

- Tints (toward white): #2ea34b, #36bf58, #48cb69, #60d27c, #7cda93, #94e1a7, #abe7ba, #c3eece, #dff6e5, #f7fdf8
- Shades (toward black): #247f3b, #217335, #1d6730, #1a5b2a, #165025, #12401d, #0f3418, #0b2812, #081c0d, #041007

## Harmonies

- Complementary: #8b2772
- Analogous: #408b27, #278b72
- Triadic: #40278b, #8b4027
- Split-complementary: #72278b, #8b2740
- Tetradic: #27408b, #8b2772, #8b7227

## Colors that go with #278b40

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 #278b40: 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), N26 (https://brandsweets.com/colors/brands/n26-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #278b40 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Coinbase (https://brandsweets.com/colors/brands/coinbase), Five Guys (https://brandsweets.com/colors/brands/fiveguys-com), Netflix (https://brandsweets.com/colors/brands/netflix), Gemstone (https://brandsweets.com/palettes/vivid#gemstone). — https://brandsweets.com/colors/crimson
- **Royal Blue** #4169e1 [harmony, pool: triadic] — Royal Blue completes a triad with #278b40 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Coinbase (https://brandsweets.com/colors/brands/coinbase), Subaru (https://brandsweets.com/colors/brands/subaru-com), Xbox (https://brandsweets.com/colors/brands/xbox-com), Console Light (https://brandsweets.com/palettes/technical#console-light). — https://brandsweets.com/colors/royalblue
- **Dark Orchid** #9932cc [harmony, pool: complementary] — Dark Orchid sits directly opposite #278b40 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Peacock (https://brandsweets.com/palettes/vivid#peacock). — https://brandsweets.com/colors/darkorchid
- **Copper** #b87333 [pool] — Designers have shipped Copper with #278b40: 4 real palettes, including Wellness and Riverbed, as the supporting colour. Seen in: Wellness (https://brandsweets.com/palettes/warm#wellness), Riverbed (https://brandsweets.com/palettes/muted#riverbed), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty). — https://brandsweets.com/colors/copper
- **Denim** #1560bd [pool] — Designers have shipped Denim with #278b40: 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 Telehealth put Midnight Blue beside #278b40, as the supporting colour. Seen in: Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com), Telehealth (https://brandsweets.com/palettes/modern#telehealth), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool). — https://brandsweets.com/colors/midnightblue
- **Taupe** #483c32 [pool] — Taupe is paired with #278b40 in 12 real palettes, including Acer's brand system and Instacart's brand system, as that palette's text colour. Seen in: Acer (https://brandsweets.com/colors/brands/acer-com), Instacart (https://brandsweets.com/colors/brands/instacart-com), Subaru (https://brandsweets.com/colors/brands/subaru-com), Wellness (https://brandsweets.com/palettes/warm#wellness). — https://brandsweets.com/colors/taupe

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

- On white (#ffffff): 4.33:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #26873e (4.55:1); AA: background → #0a0a0a (4.58:1); AAA: text → #1c632e (7.31:1)
- On black (#000000): 4.85:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #30ab4f (7.06:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/278b40-a2beac-b759d4-1f2d29-ebf1e9?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: "#278b40" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.