# #66db99

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

## Values

- Hex: `#66db99`
- RGB: rgb(102, 219, 153)
- HSL: hsl(146, 62%, 63%)
- OKLCH: oklch(0.806 0.143 156.3)
- Relative luminance: 0.5579
- Nearest named color: Enchanted Emerald (#7ed89a, Δ 2.093) — https://brandsweets.com/colors/enchanted-emerald
- Moods: vivid
- Page: https://brandsweets.com/colors/66db99

## Tints & shades

- Tints (toward white): #77dfa4, #83e2ac, #94e6b7, #a0e9c0, #b1edcb, #bdefd3, #cdf3de, #daf6e6, #eafaf1, #f7fdf9
- Shades (toward black): #4dd588, #35d078, #2cba69, #26a15b, #218c50, #1b7441, #155b33, #104225, #0a2917, #041109

## Harmonies

- Complementary: #db66a8
- Analogous: #6edb66, #66dbd3
- Triadic: #9966db, #db9966
- Split-complementary: #d366db, #db666e
- Tetradic: #666edb, #db66a8, #dbd366

## Colors that go with #66db99

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

- **Blue** #0000ff [pool] — 4 real palettes, including Minecraft's brand system and Unity's brand system put Blue beside #66db99, as the accent. Seen in: Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Unity (https://brandsweets.com/colors/brands/unity-com), MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Canva (https://brandsweets.com/colors/brands/canva-com). — https://brandsweets.com/colors/blue
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #66db99: softer than #000 and cool enough to feel like part of the same palette. Seen in: Docker (https://brandsweets.com/colors/brands/docker-com), Canopy (https://brandsweets.com/palettes/cool#canopy), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern). — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #66db99: 4 real palettes, including Prime Video's brand system and Remix's brand system, as the supporting colour. Seen in: Prime Video (https://brandsweets.com/colors/brands/primevideo-com), Remix (https://brandsweets.com/colors/brands/remix-run), Astro (https://brandsweets.com/colors/brands/astro-build), Learning App (https://brandsweets.com/palettes/playful#learning-app). — https://brandsweets.com/colors/deepskyblue
- **Mustard Yellow** #ffdb58 [pool] — 4 real palettes, including Fresh Juice and Citrus Grove put Mustard Yellow beside #66db99, as the supporting colour. Seen in: Fresh Juice (https://brandsweets.com/palettes/playful#fresh-juice), Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove), Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Meadow (https://brandsweets.com/palettes/light#meadow). — https://brandsweets.com/colors/mustard
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #66db99 in 4 real palettes, including Docker's brand system and Brilliant's brand system, as the supporting colour. Seen in: Docker (https://brandsweets.com/colors/brands/docker-com), Brilliant (https://brandsweets.com/colors/brands/brilliant-org), MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Khan Academy (https://brandsweets.com/colors/brands/khanacademy-org). — https://brandsweets.com/colors/royalblue
- **Taupe** #483c32 [pool] — Taupe is paired with #66db99 in 16 real palettes, including 7-Eleven's brand system and Astro's brand system, as the lead colour. Seen in: 7-Eleven (https://brandsweets.com/colors/brands/7-eleven-com), Astro (https://brandsweets.com/colors/brands/astro-build), WhatsApp (https://brandsweets.com/colors/brands/whatsapp-com), Rain Garden (https://brandsweets.com/palettes/cool#rain-garden). — https://brandsweets.com/colors/taupe
- **Violet** #ee82ee [harmony: complementary] — Violet sits directly opposite #66db99 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
- **Light Coral** #f08080 [harmony, pool: split] — Light Coral is a split-complement of #66db99: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Meadow (https://brandsweets.com/palettes/light#meadow). — https://brandsweets.com/colors/lightcoral

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

- On white (#ffffff): 1.73:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #1f844b (4.71:1); AA: background → #525252 (4.52:1); AAA: text → #176338 (7.3:1); AAA: background → #333333 (7.31:1)
- On black (#000000): 12.16:1 — 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/66db99-a2beb1-ce59d4-1f2d2b-eaf1e9?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: "#66db99" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.