# #3fe442

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

## Values

- Hex: `#3fe442`
- RGB: rgb(63, 228, 66)
- HSL: hsl(121, 75%, 57%)
- OKLCH: oklch(0.805 0.241 143.1)
- Relative luminance: 0.5694
- Nearest named color: Alarming Slime (#2ce335, Δ 1.235) — https://brandsweets.com/colors/alarming-slime
- Moods: vivid
- Page: https://brandsweets.com/colors/3fe442

## Tints & shades

- Tints (toward white): #51e653, #63e965, #75eb77, #87ee88, #9df19e, #aff4b0, #c1f6c1, #d2f9d3, #e4fbe5, #f6fef6
- Shades (toward black): #29e02c, #1dcd20, #1ab71d, #17a119, #148a16, #107012, #0d590e, #0a430b, #062806, #031203

## Harmonies

- Complementary: #e43fe1
- Analogous: #8fe43f, #3fe494
- Triadic: #423fe4, #e4423f
- Split-complementary: #943fe4, #e43f8f
- Tetradic: #3f8fe4, #e43fe1, #e4943f

## Colors that go with #3fe442

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

- **Taupe** #483c32 [pool] — Taupe is paired with #3fe442 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), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Acer (https://brandsweets.com/colors/brands/acer-com). — https://brandsweets.com/colors/taupe
- **Violet** #ee82ee [harmony: complementary] — Violet sits directly opposite #3fe442 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
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #3fe442: 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). — https://brandsweets.com/colors/charcoal
- **Dark Orange** #ff8c00 [pool] — Dark Orange shows up next to #3fe442 in 3 real palettes, including Learning App and Playground, as the accent. Seen in: Learning App (https://brandsweets.com/palettes/playful#learning-app), Playground (https://brandsweets.com/palettes/bold#playground), Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove). — https://brandsweets.com/colors/darkorange
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #3fe442: 3 real palettes, including Learning App and Remix's brand system, as the supporting colour. 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
- **Mustard Yellow** #ffdb58 [pool] — 3 real palettes, including Citrus Grove and Meadow put Mustard Yellow beside #3fe442, as the accent. Seen in: Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove), Meadow (https://brandsweets.com/palettes/light#meadow), Fresh Juice (https://brandsweets.com/palettes/playful#fresh-juice). — https://brandsweets.com/colors/mustard
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #3fe442 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
- **Hot Pink** #ff69b4 [harmony: split] — Hot Pink is a split-complement of #3fe442: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/hotpink

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

- On white (#ffffff): 1.7:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #138615 (4.72:1); AA: background → #525252 (4.61:1); AAA: text → #0f6710 (7.08:1); AAA: background → #363636 (7.13:1)
- On black (#000000): 12.39:1 — 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/3fe442-a2bea6-9b4edf-1f2d26-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: "#3fe442" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.