# #66ea61

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

## Values

- Hex: `#66ea61`
- RGB: rgb(102, 234, 97)
- HSL: hsl(118, 77%, 65%)
- OKLCH: oklch(0.834 0.213 142.8)
- Relative luminance: 0.6253
- Nearest named color: Grotesque Green (#64e986, Δ 3.934) — https://brandsweets.com/colors/grotesque-green
- Moods: vivid
- Page: https://brandsweets.com/colors/66ea61

## Tints & shades

- Tints (toward white): #73ec6f, #84ef81, #91f08e, #9ff29c, #b0f4ae, #bdf6bb, #caf8c9, #d8fad6, #e9fce8, #f6fef6
- Shades (toward black): #4be746, #31e32b, #22d41c, #1db918, #199e15, #147e10, #10630d, #0b4809, #072d06, #031202

## Harmonies

- Complementary: #e661ea
- Analogous: #aaea61, #61eaa1
- Triadic: #6166ea, #ea6166
- Split-complementary: #a161ea, #ea61aa
- Tetradic: #61aaea, #e661ea, #eaa161

## Colors that go with #66ea61

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

- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #66ea61: 4 real palettes, including Remix's brand system and Prime Video's brand system, as the lead colour. Seen in: Remix (https://brandsweets.com/colors/brands/remix-run), Prime Video (https://brandsweets.com/colors/brands/primevideo-com), Learning App (https://brandsweets.com/palettes/playful#learning-app), Astro (https://brandsweets.com/colors/brands/astro-build). — https://brandsweets.com/colors/deepskyblue
- **Taupe** #483c32 [pool] — Taupe is paired with #66ea61 in 8 real palettes, including 7-Eleven's brand system and WhatsApp's brand system, as the lead colour. Seen in: 7-Eleven (https://brandsweets.com/colors/brands/7-eleven-com), WhatsApp (https://brandsweets.com/colors/brands/whatsapp-com), Acer (https://brandsweets.com/colors/brands/acer-com), Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove). — https://brandsweets.com/colors/taupe
- **Violet** #ee82ee [harmony: complementary] — Violet sits directly opposite #66ea61 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/violet
- **Blue** #0000ff [pool] — 3 real palettes, including MongoDB's brand system and Minecraft's brand system put Blue beside #66ea61, as the accent. Seen in: MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Robinhood (https://brandsweets.com/colors/brands/robinhood-com). — https://brandsweets.com/colors/blue
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #66ea61: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Docker (https://brandsweets.com/colors/brands/docker-com), Zendesk (https://brandsweets.com/colors/brands/zendesk-com). — https://brandsweets.com/colors/charcoal
- **Dark Orange** #ff8c00 [pool] — Dark Orange shows up next to #66ea61 in 3 real palettes, including Learning App and Citrus Grove, as the accent. Seen in: Learning App (https://brandsweets.com/palettes/playful#learning-app), Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove), Playground (https://brandsweets.com/palettes/bold#playground). — https://brandsweets.com/colors/darkorange
- **Mustard Yellow** #ffdb58 [pool] — 3 real palettes, including Citrus Grove and Fresh Juice put Mustard Yellow beside #66ea61, as the accent. Seen in: Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove), Fresh Juice (https://brandsweets.com/palettes/playful#fresh-juice), Meadow (https://brandsweets.com/palettes/light#meadow). — https://brandsweets.com/colors/mustard
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #66ea61 in 3 real palettes, including MongoDB's brand system and Brilliant's brand system, as the supporting colour. Seen in: MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Brilliant (https://brandsweets.com/colors/brands/brilliant-org), Docker (https://brandsweets.com/colors/brands/docker-com). — https://brandsweets.com/colors/royalblue

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

- On white (#ffffff): 1.55:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #168712 (4.66:1); AA: background → #595959 (4.51:1); AAA: text → #10630d (7.47:1); AAA: background → #3b3b3b (7.2:1)
- On black (#000000): 13.51:1 — 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/66ea61-a2bea4-944edf-1f2d25-edf1e9?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: "#66ea61" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.