# #66da01

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

## Values

- Hex: `#66da01`
- RGB: rgb(102, 218, 1)
- HSL: hsl(92, 99%, 43%)
- OKLCH: oklch(0.789 0.238 136.7)
- Relative luminance: 0.5297
- Nearest named color: Alarming Slime (#2ce335, Δ 3.239) — https://brandsweets.com/colors/alarming-slime
- Moods: vivid
- Page: https://brandsweets.com/colors/66da01

## Tints & shades

- Tints (toward white): #75f901, #82fe16, #92fe34, #a0fe4d, #b0fe6c, #befe85, #ceffa4, #dcffbd, #ecffdb, #fafff5
- Shades (toward black): #5dc601, #53b201, #4a9d01, #408901, #397a01, #306501, #265100, #1d3d00, #132900, #0a1400

## Harmonies

- Complementary: #7501da
- Analogous: #d3da01, #01da08
- Triadic: #0166da, #da0166
- Split-complementary: #0801da, #da01d3
- Tetradic: #01d3da, #7501da, #da0801

## Colors that go with #66da01

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 [harmony, pool: triadic] — Deep Sky Blue completes a triad with #66da01 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Learning App (https://brandsweets.com/palettes/playful#learning-app), Remix (https://brandsweets.com/colors/brands/remix-run), Prime Video (https://brandsweets.com/colors/brands/primevideo-com). — https://brandsweets.com/colors/deepskyblue
- **Taupe** #483c32 [pool] — Taupe is paired with #66da01 in 8 real palettes, including WhatsApp's brand system and Acer's brand system, as the supporting colour. Seen in: WhatsApp (https://brandsweets.com/colors/brands/whatsapp-com), Acer (https://brandsweets.com/colors/brands/acer-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), 7-Eleven (https://brandsweets.com/colors/brands/7-eleven-com). — https://brandsweets.com/colors/taupe
- **Violet** #ee82ee [harmony: complementary] — Violet sits directly opposite #66da01 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
- **Hot Pink** #ff69b4 [harmony, pool: split] — Hot Pink is a split-complement of #66da01: 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
- **Dark Orange** #ff8c00 [pool] — Dark Orange shows up next to #66da01 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
- **Light Coral** #f08080 [harmony, pool: triadic] — Light Coral completes a triad with #66da01 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Meadow (https://brandsweets.com/palettes/light#meadow). — https://brandsweets.com/colors/lightcoral
- **Blue** #0000ff [pool] — Two real palettes: MongoDB's brand system and Minecraft's brand system put Blue beside #66da01, as the accent. Seen in: MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net). — https://brandsweets.com/colors/blue
- **Charcoal** #36454f [role] — Charcoal is the body-text near-black for #66da01: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. — https://brandsweets.com/colors/charcoal

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

- On white (#ffffff): 1.81:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #3e8401 (4.66:1); AA: background → #4f4f4f (4.52:1); AAA: text → #306501 (7.03:1); AAA: background → #303030 (7.29:1)
- On black (#000000): 11.59:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Monster Energy** — accent #6bd41a (Δ 1.835) — https://brandsweets.com/colors/brands/monsterenergy-com

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/66da01-acbea2-564edf-202d1f-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: "#66da01" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.