# #81bc01

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

## Values

- Hex: `#81bc01`
- RGB: rgb(129, 188, 1)
- HSL: hsl(79, 99%, 37%)
- OKLCH: oklch(0.727 0.192 128.7)
- Relative luminance: 0.4064
- Nearest named color: Emerald Glitter (#66bb00, Δ 2.855) — https://brandsweets.com/colors/emerald-glitter
- Moods: vivid
- Page: https://brandsweets.com/colors/81bc01

## Tints & shades

- Tints (toward white): #95da01, #aaf901, #b6fe1b, #c0fe39, #cbfe5d, #d5fe7b, #dffe9a, #e8ffb8, #f2ffd6, #fcfff5
- Shades (toward black): #76ad01, #689801, #5e8901, #537a01, #496b01, #3b5600, #314700, #263800, #182400, #0e1400

## Harmonies

- Complementary: #3c01bc
- Analogous: #bc9a01, #23bc01
- Triadic: #0181bc, #bc0181
- Split-complementary: #0123bc, #9a01bc
- Tetradic: #01bc9a, #3c01bc, #bc0123

## Colors that go with #81bc01

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 #81bc01: 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). — https://brandsweets.com/colors/charcoal
- **Taupe** #483c32 [pool] — Taupe is paired with #81bc01 in 8 real palettes, including Acer's brand system and Minecraft's brand system, as the text colour against it. Seen in: Acer (https://brandsweets.com/colors/brands/acer-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Meadow (https://brandsweets.com/palettes/light#meadow), Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove). — https://brandsweets.com/colors/taupe
- **Orchid** #da70d6 [harmony: complementary] — Orchid sits directly opposite #81bc01 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 #81bc01: 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
- **Cornflower Blue** #6495ed [harmony, pool: split] — Cornflower Blue is a split-complement of #81bc01: 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
- **Blue** #0000ff [pool] — 3 real palettes, including Minecraft's brand system and Spotify's brand system put Blue beside #81bc01, 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). — https://brandsweets.com/colors/blue
- **Dark Orange** #ff8c00 [pool] — Dark Orange shows up next to #81bc01 in 3 real palettes, including Citrus Grove and Learning App, as the lead colour. Seen in: Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove), Learning App (https://brandsweets.com/palettes/playful#learning-app), Playground (https://brandsweets.com/palettes/bold#playground). — https://brandsweets.com/colors/darkorange
- **Sandy Brown** #f4a460 [pool] — Sandy Brown is paired with #81bc01 in 3 real palettes, including Ubereats's brand system and Undergrowth, as the accent. Seen in: Ubereats (https://brandsweets.com/colors/brands/ubereats-com), Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor). — https://brandsweets.com/colors/sandybrown

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

- On white (#ffffff): 2.3:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #577f01 (4.73:1); AA: background → #404040 (4.51:1); AAA: text → #426000 (7.23:1); AAA: background → #1f1f1f (7.16:1)
- On black (#000000): 9.13:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Acer** — primary #83b81a (Δ 1.388) — 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/81bc01-b2bea2-4e66df-232d1f-f1f0e9?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: "#81bc01" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.