# #b4ff05

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

## Values

- Hex: `#b4ff05`
- RGB: rgb(180, 255, 5)
- HSL: hsl(78, 100%, 51%)
- OKLCH: oklch(0.916 0.239 128.1)
- Relative luminance: 0.8123
- Nearest named color: Atomic Lime (#b9ff03, Δ 0.544) — https://brandsweets.com/colors/atomic-lime
- Moods: vivid
- Page: https://brandsweets.com/colors/b4ff05

## Tints & shades

- Tints (toward white): #bcff1f, #c2ff33, #c9ff4d, #d1ff66, #d9ff80, #dfff94, #e7ffad, #eeffc7, #f4ffdb, #fcfff5
- Shades (toward black): #a4eb00, #96d600, #84bd00, #72a300, #648f00, #527500, #405c00, #2e4200, #202e00, #0e1400

## Harmonies

- Complementary: #5005ff
- Analogous: #ffcd05, #37ff05
- Triadic: #05b4ff, #ff05b4
- Split-complementary: #0537ff, #cd05ff
- Tetradic: #05ffcd, #5005ff, #ff0537

## Colors that go with #b4ff05

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 #b4ff05 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
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #b4ff05: 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
- **Blue** #0000ff [pool] — Two real palettes: Robinhood's brand system and Snapchat's brand system put Blue beside #b4ff05, 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
- **Crimson** #dc143c [pool] — Crimson is paired with #b4ff05 in two real palettes: 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). — https://brandsweets.com/colors/crimson
- **Deep Pink** #ff1493 [pool] — Two real palettes: Arcade and JetBrains's brand system put Deep Pink beside #b4ff05, 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
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #b4ff05: two real palettes: JetBrains's brand system and Star Wars's brand system, as the supporting colour. Seen in: JetBrains (https://brandsweets.com/colors/brands/jetbrains-com), Star Wars (https://brandsweets.com/colors/brands/starwars-com). — https://brandsweets.com/colors/dodgerblue
- **Lime Green** #32cd32 [pool] — Two real palettes: Duolingo's brand system and Monster Energy's brand system put Lime Green beside #b4ff05, 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
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #b4ff05 in two real palettes: Klaviyo's brand system and Heineken's brand system, as the accent. Seen in: Klaviyo (https://brandsweets.com/colors/brands/klaviyo-com), Heineken (https://brandsweets.com/colors/brands/heineken-com). — https://brandsweets.com/colors/mediumseagreen

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

- On white (#ffffff): 1.22:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #598000 (4.65:1); AA: background → #696969 (4.51:1); AAA: text → #446100 (7.1:1); AAA: background → #4a4a4a (7.28:1)
- On black (#000000): 17.25:1 — 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/b4ff05-b2bea2-4e69df-232d1f-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: "#b4ff05" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.