# #3fe901

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

## Values

- Hex: `#3fe901`
- RGB: rgb(63, 233, 1)
- HSL: hsl(104, 99%, 46%)
- OKLCH: oklch(0.816 0.266 140.7)
- Relative luminance: 0.5934
- Nearest named color: Becquerel (#4bec13, Δ 1.123) — https://brandsweets.com/colors/becquerel
- Moods: vivid
- Page: https://brandsweets.com/colors/3fe901

## Tints & shades

- Tints (toward white): #48fe06, #5bfe20, #71fe3e, #84fe58, #97fe71, #a9fe8a, #bcffa4, #d2ffc2, #e5ffdb, #f8fff5
- Shades (toward black): #3ad501, #34c101, #2da701, #289301, #227f01, #1d6b01, #175600, #103d00, #0b2900, #051400

## Harmonies

- Complementary: #ab01e9
- Analogous: #b3e901, #01e937
- Triadic: #013fe9, #e9013f
- Split-complementary: #3701e9, #e901b3
- Tetradic: #01b3e9, #ab01e9, #e93701

## Colors that go with #3fe901

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 #3fe901 — 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 #3fe901 in 4 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 #3fe901 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: split] — Hot Pink is a split-complement of #3fe901: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/hotpink
- **Blue** #0000ff [pool] — Two real palettes: MongoDB's brand system and Minecraft's brand system put Blue beside #3fe901, 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 #3fe901: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. — https://brandsweets.com/colors/charcoal
- **Lilac** #c8a2c8 [harmony: split] — Lilac is a split-complement of #3fe901: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/lilac
- **Red** #ff0000 [pool] — Red is paired with #3fe901 in two real palettes: Gatorade's brand system and Wise's brand system, as the supporting colour. Seen in: Gatorade (https://brandsweets.com/colors/brands/gatorade-com), Wise (https://brandsweets.com/colors/brands/wise-com). — https://brandsweets.com/colors/red

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

- On white (#ffffff): 1.63:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #258901 (4.51:1); AA: background → #545454 (4.64:1); AAA: text → #1b6501 (7.22:1); AAA: background → #383838 (7.18:1)
- On black (#000000): 12.87:1 — 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/3fe901-a6bea2-724edf-1f2d22-eff1e9?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: "#3fe901" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.