# #b9fb04

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

## Values

- Hex: `#b9fb04`
- RGB: rgb(185, 251, 4)
- HSL: hsl(76, 97%, 50%)
- OKLCH: oklch(0.91 0.233 126.5)
- Relative luminance: 0.7932
- Nearest named color: Atomic Lime (#b9ff03, Δ 1.042) — https://brandsweets.com/colors/atomic-lime
- Moods: vivid
- Page: https://brandsweets.com/colors/b9fb04

## Tints & shades

- Tints (toward white): #c0fc1d, #c7fc36, #cdfc4a, #d4fd63, #dbfd7c, #e2fd96, #e9feaf, #eefec3, #f5fedc, #fcfff5
- Shades (toward black): #a7e203, #98ce03, #85b503, #77a102, #648802, #516f02, #435a01, #304101, #212d01, #0f1400

## Harmonies

- Complementary: #4604fb
- Analogous: #fbc104, #3efb04
- Triadic: #04b9fb, #fb04b9
- Split-complementary: #043efb, #c104fb
- Tetradic: #04fbc1, #4604fb, #fb043e

## Colors that go with #b9fb04

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

- **Red** #ff0000 [pool] — Red is paired with #b9fb04 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
- **Plum** #dda0dd [harmony: complementary] — Plum sits directly opposite #b9fb04 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/plum
- **Violet** #ee82ee [harmony, pool: split] — Violet is a split-complement of #b9fb04: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. 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 #b9fb04: 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 #b9fb04 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
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #b9fb04: 3 real palettes, including 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), Miro (https://brandsweets.com/colors/brands/miro-com). — https://brandsweets.com/colors/dodgerblue
- **Gold** #ffd700 [pool] — Gold shows up next to #b9fb04 in 3 real palettes, including Ikea's brand system and Paddle's brand system, as the supporting colour. Seen in: Ikea (https://brandsweets.com/colors/brands/ikea-com), Paddle (https://brandsweets.com/colors/brands/paddle-com), Lay's (https://brandsweets.com/colors/brands/lays-com). — https://brandsweets.com/colors/gold
- **Taupe** #483c32 [pool] — Taupe is paired with #b9fb04 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

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

- On white (#ffffff): 1.25:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #5d7e02 (4.72:1); AA: background → #666666 (4.61:1); AAA: text → #465f01 (7.25:1); AAA: background → #4a4a4a (7.12:1)
- On black (#000000): 16.86:1 — AA pass, AA-large pass, AAA pass

## Curated palettes containing it

- **Electric Lime** (neon, vivid, bold, light) — #c6ff00, #111111, #ff3d00, #ffffff — One neon on white with black type — lime-and-black is the neon that works in daylight; the orange is a second gear. — tool: https://brandsweets.com/palettes/new/c6ff00-111111-ff3d00-ffffff — collection: https://brandsweets.com/palettes/neon

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/b9fb04-b3bea2-4e6edf-232d1f-f1efe9?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: "#b9fb04" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.