# #b4ff42

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

## Values

- Hex: `#b4ff42`
- RGB: rgb(180, 255, 66)
- HSL: hsl(84, 100%, 63%)
- OKLCH: oklch(0.918 0.222 129.3)
- Relative luminance: 0.8162
- Nearest named color: greenyellow (#adff2f, Δ 1.306) — https://brandsweets.com/colors/greenyellow
- Moods: vivid
- Page: https://brandsweets.com/colors/b4ff42

## Tints & shades

- Tints (toward white): #bcff57, #c2ff66, #caff7a, #d0ff8a, #d8ff9e, #deffad, #e7ffc2, #edffd1, #f5ffe5, #fbfff5
- Shades (toward black): #a7ff24, #9bff05, #8ae600, #77c700, #68ad00, #568f00, #437000, #315200, #1f3300, #0c1400

## Harmonies

- Complementary: #8e42ff
- Analogous: #ffec42, #55ff42
- Triadic: #42b4ff, #ff42b4
- Split-complementary: #4255ff, #ec42ff
- Tetradic: #42ffec, #8e42ff, #ff4255

## Colors that go with #b4ff42

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, pool: complementary] — Violet sits directly opposite #b4ff42 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Gumroad (https://brandsweets.com/colors/brands/gumroad-com). — https://brandsweets.com/colors/violet
- **Red** #ff0000 [pool] — Red is paired with #b4ff42 in 4 real palettes, including Wise's brand system and Heineken's brand system, as the lead colour. Seen in: Wise (https://brandsweets.com/colors/brands/wise-com), Heineken (https://brandsweets.com/colors/brands/heineken-com), Gatorade (https://brandsweets.com/colors/brands/gatorade-com), Paddle (https://brandsweets.com/colors/brands/paddle-com). — https://brandsweets.com/colors/red
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #b4ff42: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Zendesk (https://brandsweets.com/colors/brands/zendesk-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #b4ff42 in 3 real palettes, including Wise's brand system and Ferrari's brand system, as the accent. Seen in: Wise (https://brandsweets.com/colors/brands/wise-com), Ferrari (https://brandsweets.com/colors/brands/ferrari-com), Lay's (https://brandsweets.com/colors/brands/lays-com). — https://brandsweets.com/colors/crimson
- **Gold** #ffd700 [pool] — Gold shows up next to #b4ff42 in 3 real palettes, including Ikea's brand system and Lay's's brand system, as the supporting colour. Seen in: Ikea (https://brandsweets.com/colors/brands/ikea-com), Lay's (https://brandsweets.com/colors/brands/lays-com), Paddle (https://brandsweets.com/colors/brands/paddle-com). — https://brandsweets.com/colors/gold
- **Taupe** #483c32 [pool] — Taupe is paired with #b4ff42 in 3 real palettes, including Calvin Klein's brand system and Tommy Hilfiger's brand system, as the lead colour. Seen in: Calvin Klein (https://brandsweets.com/colors/brands/calvinklein-us), Tommy Hilfiger (https://brandsweets.com/colors/brands/tommy-com), Crayon Box (https://brandsweets.com/palettes/playful#crayon-box). — https://brandsweets.com/colors/taupe
- **Blue** #0000ff [pool] — Two real palettes: Robinhood's brand system and Snapchat's brand system put Blue beside #b4ff42, as the supporting colour. Seen in: Robinhood (https://brandsweets.com/colors/brands/robinhood-com), Snapchat (https://brandsweets.com/colors/brands/snapchat-com). — https://brandsweets.com/colors/blue
- **Deep Pink** #ff1493 [pool] — Two real palettes: Arcade and JetBrains's brand system put Deep Pink beside #b4ff42, as the lead colour. Seen in: Arcade (https://brandsweets.com/palettes/vivid#arcade), JetBrains (https://brandsweets.com/colors/brands/jetbrains-com). — https://brandsweets.com/colors/deeppink

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

- On white (#ffffff): 1.21:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #4d8000 (4.77:1); AA: background → #696969 (4.53:1); AAA: text → #3a6100 (7.27:1); AAA: background → #4a4a4a (7.31:1)
- On black (#000000): 17.32:1 — 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/b4ff42-afbea2-4e5adf-222d1f-f1f0e9?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: "#b4ff42" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.