# #42ff4f

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

## Values

- Hex: `#42ff4f`
- RGB: rgb(66, 255, 79)
- HSL: hsl(124, 100%, 63%)
- OKLCH: oklch(0.876 0.261 143.7)
- Relative luminance: 0.7324
- Nearest named color: Cathode Green (#00ff55, Δ 1.264) — https://brandsweets.com/colors/cathode-green
- Moods: vivid
- Page: https://brandsweets.com/colors/42ff4f

## Tints & shades

- Tints (toward white): #57ff62, #66ff70, #7aff83, #8aff92, #9effa5, #adffb3, #c2ffc6, #d1ffd4, #e5ffe7, #f5fff5
- Shades (toward black): #24ff32, #05ff16, #00e60f, #00c70d, #00ad0c, #008f0a, #007007, #005205, #003303, #001401

## Harmonies

- Complementary: #ff42f2
- Analogous: #94ff42, #42ffad
- Triadic: #4f42ff, #ff4f42
- Split-complementary: #ad42ff, #ff4294
- Tetradic: #4294ff, #ff42f2, #ffad42

## Colors that go with #42ff4f

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

- **Violet** #ee82ee [harmony: complementary] — Violet sits directly opposite #42ff4f 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 #42ff4f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/hotpink
- **Plum** #dda0dd [harmony: split] — Plum is a split-complement of #42ff4f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/plum
- **Blue** #0000ff [pool] — Two real palettes: MongoDB's brand system and Robinhood's brand system put Blue beside #42ff4f, 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 #42ff4f: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #42ff4f: two real palettes: Remix's brand system and Prime Video's brand system, as the lead colour. Seen in: Remix (https://brandsweets.com/colors/brands/remix-run), Prime Video (https://brandsweets.com/colors/brands/primevideo-com). — https://brandsweets.com/colors/deepskyblue
- **Lime Green** #32cd32 [pool] — Two real palettes: Duolingo's brand system and Monster Energy's brand system put Lime Green beside #42ff4f, as the lead colour. Seen in: Duolingo (https://brandsweets.com/colors/brands/duolingo), Monster Energy (https://brandsweets.com/colors/brands/monsterenergy-com). — https://brandsweets.com/colors/limegreen
- **Red** #ff0000 [pool] — Red is paired with #42ff4f 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): 1.34:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #008a09 (4.53:1); AA: background → #616161 (4.62:1); AAA: text → #006607 (7.23:1); AAA: background → #454545 (7.14:1)
- On black (#000000): 15.65:1 — 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/42ff4f-a2bea7-a24edf-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: "#42ff4f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.