# #437d21

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

## Values

- Hex: `#437d21`
- RGB: rgb(67, 125, 33)
- HSL: hsl(98, 58%, 31%)
- OKLCH: oklch(0.531 0.138 136.3)
- Relative luminance: 0.1597
- Nearest named color: Avocado (#568203, Δ 2.974) — https://brandsweets.com/colors/avocado
- Moods: neutral
- Page: https://brandsweets.com/colors/437d21

## Tints & shades

- Tints (toward white): #529929, #5fb12f, #6fcb3a, #83d256, #98da72, #aae08a, #bee7a6, #d3efc3, #e5f5db, #f9fdf7
- Shades (toward black): #3c711e, #38691c, #325d19, #2b5115, #274913, #203c10, #1a300d, #13240a, #0f1c07, #091004

## Harmonies

- Complementary: #5b217d
- Analogous: #717d21, #217d2d
- Triadic: #21437d, #7d2143
- Split-complementary: #2d217d, #7d2171
- Tetradic: #21717d, #5b217d, #7d2d21

## Colors that go with #437d21

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 #437d21: 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), Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Canopy (https://brandsweets.com/palettes/cool#canopy). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #437d21 — 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 #437d21 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Xbox (https://brandsweets.com/colors/brands/xbox-com), Coinbase (https://brandsweets.com/colors/brands/coinbase), Subaru (https://brandsweets.com/colors/brands/subaru-com), Console Light (https://brandsweets.com/palettes/technical#console-light). — https://brandsweets.com/colors/royalblue
- **Blue** #0000ff [pool] — 4 real palettes, including Instacart's brand system and Kia's brand system put Blue beside #437d21, as the accent. Seen in: Instacart (https://brandsweets.com/colors/brands/instacart-com), Kia (https://brandsweets.com/colors/brands/kia-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Rolex (https://brandsweets.com/colors/brands/rolex-com). — https://brandsweets.com/colors/blue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #437d21: 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
- **Sage Green** #9caf88 [pool] — Designers have shipped Sage Green with #437d21: 4 real palettes, including Olive Grove and Forest Floor, as the supporting colour. Seen in: Olive Grove (https://brandsweets.com/palettes/muted#olive-grove), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Riverbed (https://brandsweets.com/palettes/muted#riverbed), Pine & Birch (https://brandsweets.com/palettes/clean#pine-and-birch). — https://brandsweets.com/colors/sage-green
- **Taupe** #483c32 [pool] — Taupe is paired with #437d21 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), 7-Eleven (https://brandsweets.com/colors/brands/7-eleven-com). — https://brandsweets.com/colors/taupe
- **Dark Orchid** #9932cc [harmony: complementary] — Dark Orchid sits directly opposite #437d21 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/darkorchid

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

- On white (#ffffff): 5.01:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #34611a (7.32:1)
- On black (#000000): 4.19:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #478523 (4.65:1); AA: background → #f5f5f5 (4.59:1); AAA: text → #5ba92d (7.16:1)

## Brands using this color

- **Bun** — primary #4d7c1b (Δ 1.001) — https://brandsweets.com/colors/brands/bun-sh
- **Bun** — accent #4d7c1b (Δ 1.001) — https://brandsweets.com/colors/brands/bun-sh
- **Acer** — accent #40810c (Δ 1.897) — https://brandsweets.com/colors/brands/acer-com

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/437d21-a9bea2-644edf-1f2d20-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: "#437d21" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.