# #81b643

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

## Values

- Hex: `#81b643`
- RGB: rgb(129, 182, 67)
- HSL: hsl(88, 46%, 49%)
- OKLCH: oklch(0.715 0.156 130.5)
- Relative luminance: 0.3853
- Nearest named color: Gameboy Screen (#8bac0f, Δ 3.218) — https://brandsweets.com/colors/gameboy-screen
- Moods: neutral
- Page: https://brandsweets.com/colors/81b643

## Tints & shades

- Tints (toward white): #8dc054, #9ac766, #a6cd79, #b2d48c, #bfdb9e, #c9e1ad, #d5e8c0, #e1eed2, #eef5e5, #fafcf8
- Shades (toward black): #76a83e, #699537, #5f8632, #51732b, #476525, #3a521e, #2f4319, #223012, #18220c, #0b0f06

## Harmonies

- Complementary: #7943b6
- Analogous: #b6b343, #47b643
- Triadic: #4381b6, #b64381
- Split-complementary: #4347b6, #b343b6
- Tetradic: #43b6b3, #7943b6, #b64347

## Colors that go with #81b643

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 #81b643: 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), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), Docker (https://brandsweets.com/colors/brands/docker-com), Disney (https://brandsweets.com/colors/brands/disney-com). — https://brandsweets.com/colors/charcoal
- **Blue** #0000ff [pool] — 4 real palettes, including Minecraft's brand system and Spotify's brand system put Blue beside #81b643, as the accent. Seen in: Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Spotify (https://brandsweets.com/colors/brands/spotify), Unity (https://brandsweets.com/colors/brands/unity-com), Lexus (https://brandsweets.com/colors/brands/lexus-com). — https://brandsweets.com/colors/blue
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #81b643: 4 real palettes, including Playground and Unity's brand system, as the supporting colour. Seen in: Playground (https://brandsweets.com/palettes/bold#playground), Unity (https://brandsweets.com/colors/brands/unity-com), Spline (https://brandsweets.com/colors/brands/spline-design), Liquid Death (https://brandsweets.com/colors/brands/liquiddeath-com). — https://brandsweets.com/colors/dodgerblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #81b643 in 6 real palettes, including Brilliant's brand system and Khan Academy's brand system, as the accent. Seen in: Brilliant (https://brandsweets.com/colors/brands/brilliant-org), Khan Academy (https://brandsweets.com/colors/brands/khanacademy-org), Console Light (https://brandsweets.com/palettes/technical#console-light), Telehealth (https://brandsweets.com/palettes/modern#telehealth). — https://brandsweets.com/colors/royalblue
- **Slate Gray** #708090 [pool] — 4 real palettes, including Indigo SaaS and Ledger Dark put Slate Gray beside #81b643, as the supporting colour. Seen in: Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Ledger Dark (https://brandsweets.com/palettes/dark#ledger-dark), Noir Beauty (https://brandsweets.com/palettes/dark#noir-beauty), Midnight Luxe (https://brandsweets.com/palettes/luxury#midnight-luxe). — https://brandsweets.com/colors/slategray
- **Taupe** #483c32 [pool] — Taupe is paired with #81b643 in 13 real palettes, including Acer's brand system and Meadow, as the text colour against it. Seen in: Acer (https://brandsweets.com/colors/brands/acer-com), Meadow (https://brandsweets.com/palettes/light#meadow), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove). — https://brandsweets.com/colors/taupe
- **Orchid** #da70d6 [harmony: complementary] — Orchid sits directly opposite #81b643 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/orchid
- **Hot Pink** #ff69b4 [harmony, pool: split] — Hot Pink is a split-complement of #81b643: 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). — https://brandsweets.com/colors/hotpink

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

- On white (#ffffff): 2.41:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #597f2f (4.67:1); AA: background → #3d3d3d (4.5:1); AAA: text → #446124 (7.04:1); AAA: background → #1c1c1c (7.06:1)
- On black (#000000): 8.71:1 — AA pass, AA-large pass, AAA pass

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/81b643-aebea2-4e51df-212d1f-f1f1e9?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: "#81b643" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.