# #81990b

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

## Values

- Hex: `#81990b`
- RGB: rgb(129, 153, 11)
- HSL: hsl(70, 87%, 32%)
- OKLCH: oklch(0.642 0.15 120.3)
- Relative luminance: 0.2747
- Nearest named color: BioShock (#889900, Δ 0.934) — https://brandsweets.com/colors/bioshock
- Moods: vivid
- Page: https://brandsweets.com/colors/81990b

## Tints & shades

- Tints (toward white): #9dba0d, #b5d70f, #ccef1a, #d2f137, #daf358, #e1f679, #e7f896, #effab7, #f5fcd4, #fdfef5
- Shades (toward black): #758a0a, #697c09, #617208, #556407, #495606, #3c4805, #303904, #283003, #1c2102, #101301

## Harmonies

- Complementary: #220b99
- Analogous: #99690b, #3a990b
- Triadic: #0b8199, #990b81
- Split-complementary: #0b3a99, #690b99
- Tetradic: #0b9969, #220b99, #990b3a

## Colors that go with #81990b

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

- **Medium Purple** #9370db [harmony, pool: complementary] — Medium Purple sits directly opposite #81990b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Next.js (https://brandsweets.com/colors/brands/nextjs-org). — https://brandsweets.com/colors/mediumpurple
- **Blue** #0000ff [pool] — 5 real palettes, including Rolex's brand system and Spotify's brand system put Blue beside #81990b, as the accent. Seen in: Rolex (https://brandsweets.com/colors/brands/rolex-com), Spotify (https://brandsweets.com/colors/brands/spotify), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Instacart (https://brandsweets.com/colors/brands/instacart-com). — https://brandsweets.com/colors/blue
- **Dark Olive Green** #556b2f [pool] — Dark Olive Green shows up next to #81990b in 4 real palettes, including Undergrowth and Forest Floor, as the supporting colour. Seen in: Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Cider (https://brandsweets.com/palettes/warm#cider), Olive Grove (https://brandsweets.com/palettes/muted#olive-grove). — https://brandsweets.com/colors/darkolivegreen
- **Slate Gray** #708090 [pool] — 4 real palettes, including Greige and Ledger Dark put Slate Gray beside #81990b, as the lead colour. Seen in: Greige (https://brandsweets.com/palettes/neutral#greige), Ledger Dark (https://brandsweets.com/palettes/dark#ledger-dark), Mushroom (https://brandsweets.com/palettes/neutral#mushroom), Atelier (https://brandsweets.com/palettes/elegant#atelier). — https://brandsweets.com/colors/slategray
- **Taupe** #483c32 [pool] — Taupe is paired with #81990b in 13 real palettes, including Undergrowth and Acer's brand system, as the surface under it. Seen in: Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Acer (https://brandsweets.com/colors/brands/acer-com), Meadow (https://brandsweets.com/palettes/light#meadow), Cider (https://brandsweets.com/palettes/warm#cider). — https://brandsweets.com/colors/taupe
- **Cornflower Blue** #6495ed [harmony, pool: split] — Cornflower Blue is a split-complement of #81990b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Terminal (https://brandsweets.com/palettes/technical#terminal), Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/cornflowerblue
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #81990b: 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), Puma (https://brandsweets.com/colors/brands/puma-com). — https://brandsweets.com/colors/charcoal
- **Chocolate** #d2691e [pool] — Chocolate shows up next to #81990b in 3 real palettes, including Farmers Market and Homestead, as the lead colour. Seen in: Farmers Market (https://brandsweets.com/palettes/warm#farmers-market), Homestead (https://brandsweets.com/palettes/warm#homestead), Wellness (https://brandsweets.com/palettes/warm#wellness). — https://brandsweets.com/colors/chocolate

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

- On white (#ffffff): 3.23:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #697c09 (4.68:1); AA: background → #262626 (4.68:1); AAA: text → #515f07 (7.02:1)
- On black (#000000): 6.49:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #89a20b (7.24:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/81990b-b6bea2-4e7cdf-252d1f-f1efe9?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: "#81990b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.