# #4ef73b

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

## Values

- Hex: `#4ef73b`
- RGB: rgb(78, 247, 59)
- HSL: hsl(114, 92%, 60%)
- OKLCH: oklch(0.857 0.26 141.7)
- Relative luminance: 0.6846
- Nearest named color: Cathode Green (#00ff55, Δ 2.431) — https://brandsweets.com/colors/cathode-green
- Moods: vivid
- Page: https://brandsweets.com/colors/4ef73b

## Tints & shades

- Tints (toward white): #60f84f, #71f862, #7ff971, #90fa85, #a2fb98, #b4fcac, #c5fcbf, #d3fdce, #e4fee2, #f6fff5
- Shades (toward black): #33f61e, #21f00a, #1dd309, #1aba08, #169d07, #127f05, #0e6704, #0a4903, #073102, #031401

## Harmonies

- Complementary: #e43bf7
- Analogous: #acf73b, #3bf786
- Triadic: #3b4ef7, #f73b4e
- Split-complementary: #863bf7, #f73bac
- Tetradic: #3bacf7, #e43bf7, #f7863b

## Colors that go with #4ef73b

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 #4ef73b — 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 #4ef73b 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 #4ef73b: 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 #4ef73b, 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 #4ef73b: 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 #4ef73b: 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 #4ef73b 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 #4ef73b — 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): 1.43:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #138906 (4.56:1); AA: background → #5e5e5e (4.54:1); AAA: text → #0e6704 (7.09:1); AAA: background → #424242 (7.03:1)
- On black (#000000): 14.69:1 — 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/4ef73b-a2bea2-8a4edf-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: "#4ef73b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.