# #4ef538

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

## Values

- Hex: `#4ef538`
- RGB: rgb(78, 245, 56)
- HSL: hsl(113, 90%, 59%)
- OKLCH: oklch(0.851 0.26 141.5)
- Relative luminance: 0.6721
- Nearest named color: Becquerel (#4bec13, Δ 2.596) — https://brandsweets.com/colors/becquerel
- Moods: vivid
- Page: https://brandsweets.com/colors/4ef538

## Tints & shades

- Tints (toward white): #60f64c, #71f75f, #82f872, #93f986, #a5fa99, #b1faa8, #c3fbbb, #d4fccf, #e5fde2, #f6fef5
- Shades (toward black): #39f320, #26e90c, #22d00b, #1db309, #199b08, #157e07, #116605, #0c4904, #083003, #031301

## Harmonies

- Complementary: #df38f5
- Analogous: #acf538, #38f580
- Triadic: #384ef5, #f5384e
- Split-complementary: #8038f5, #f538ac
- Tetradic: #38acf5, #df38f5, #f58038

## Colors that go with #4ef538

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 #4ef538 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. 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). — https://brandsweets.com/colors/deepskyblue
- **Violet** #ee82ee [harmony: complementary] — Violet sits directly opposite #4ef538 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 #4ef538: 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 Robinhood's brand system put Blue beside #4ef538, as the accent. Seen in: MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Robinhood (https://brandsweets.com/colors/brands/robinhood-com). — https://brandsweets.com/colors/blue
- **Charcoal** #36454f [role] — Charcoal is the body-text near-black for #4ef538: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. — https://brandsweets.com/colors/charcoal
- **Plum** #dda0dd [harmony: split] — Plum is a split-complement of #4ef538: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/plum
- **Red** #ff0000 [pool] — Red is paired with #4ef538 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
- **Light Coral** #f08080 [harmony: triadic] — Light Coral completes a triad with #4ef538 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. — https://brandsweets.com/colors/lightcoral

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

- On white (#ffffff): 1.45:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #168807 (4.61:1); AA: background → #5c5c5c (4.6:1); AAA: text → #116605 (7.18:1); AAA: background → #404040 (7.13:1)
- On black (#000000): 14.44:1 — 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/4ef538-a2bea2-884edf-1f2d24-eef1e9?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: "#4ef538" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.