# #21581d

A color — dark, luxury, bold. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#21581d`
- RGB: rgb(33, 88, 29)
- HSL: hsl(116, 50%, 23%)
- OKLCH: oklch(0.409 0.107 142.2)
- Relative luminance: 0.0739
- Nearest named color: Lincoln Green (#195905, Δ 2.073) — https://brandsweets.com/colors/lincoln-green
- Moods: dark, luxury, bold
- Page: https://brandsweets.com/colors/21581d

## Tints & shades

- Tints (toward white): #2d7728, #379130, #42b03b, #53c34b, #70cd6a, #8ad685, #a7e0a3, #c1e9be, #def4dd, #f8fcf7
- Shades (toward black): #1e501b, #1b4918, #194116, #163913, #143612, #112e0f, #0e260d, #0c1f0a, #091708, #060f05

## Harmonies

- Complementary: #541d58
- Analogous: #3f581d, #1d5837
- Triadic: #1d2158, #581d21
- Split-complementary: #371d58, #581d3f
- Tetradic: #1d3f58, #541d58, #58371d

## Colors that go with #21581d

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 #21581d: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Canopy (https://brandsweets.com/palettes/cool#canopy), Pampers (https://brandsweets.com/colors/brands/pampers-com), Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-com). — https://brandsweets.com/colors/charcoal
- **Blue** #0000ff [pool] — 4 real palettes, including Rolex's brand system and Warp's brand system put Blue beside #21581d, as the accent. Seen in: Rolex (https://brandsweets.com/colors/brands/rolex-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Jeep (https://brandsweets.com/colors/brands/jeep-com), Instacart (https://brandsweets.com/colors/brands/instacart-com). — https://brandsweets.com/colors/blue
- **Emerald Green** #50c878 [pool] — Emerald Green is paired with #21581d in 4 real palettes, including CircleCI's brand system and Neon's brand system, as the supporting colour. Seen in: CircleCI (https://brandsweets.com/colors/brands/circleci-com), Neon (https://brandsweets.com/colors/brands/neon-tech), Chime (https://brandsweets.com/colors/brands/chime-com), WhatsApp (https://brandsweets.com/colors/brands/whatsapp-com). — https://brandsweets.com/colors/emerald-green
- **Sage Green** #9caf88 [pool] — Designers have shipped Sage Green with #21581d: 4 real palettes, including Pine & Birch and Darkroom, as the supporting colour. Seen in: Pine & Birch (https://brandsweets.com/palettes/clean#pine-and-birch), Darkroom (https://brandsweets.com/palettes/muted#darkroom), Stone (https://brandsweets.com/palettes/neutral#stone), Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding). — https://brandsweets.com/colors/sage-green
- **Taupe** #483c32 [pool] — Taupe is paired with #21581d in 11 real palettes, including Pine & Birch and Bookshop, as that palette's text colour. Seen in: Pine & Birch (https://brandsweets.com/palettes/clean#pine-and-birch), Bookshop (https://brandsweets.com/palettes/editorial#bookshop), Squarespace (https://brandsweets.com/colors/brands/squarespace-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 #21581d 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
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #21581d in 3 real palettes, including Neon's brand system and Clerk's brand system, as the accent. Seen in: Neon (https://brandsweets.com/colors/brands/neon-tech), Clerk (https://brandsweets.com/colors/brands/clerk-com), HubSpot (https://brandsweets.com/colors/brands/hubspot-com). — https://brandsweets.com/colors/orangered
- **Royal Blue** #4169e1 [harmony, pool: triadic] — Royal Blue completes a triad with #21581d — 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), Disney (https://brandsweets.com/colors/brands/disney-com). — https://brandsweets.com/colors/royalblue

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

- On white (#ffffff): 8.47:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.48:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #33862d (4.59:1); AA: background → #bdbdbd (4.51:1); AAA: text → #41ac39 (7.18:1); AAA: background → #ebebeb (7.11:1)

## Fonts for this mood

- luxury: https://brandsweets.com/fonts/mood/luxury
- bold: https://brandsweets.com/fonts/mood/bold

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/21581d-a2bea3-8f4edf-1f2d24-eef1e9?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: "#21581d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.