# #b9fc55

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

## Values

- Hex: `#b9fc55`
- RGB: rgb(185, 252, 85)
- HSL: hsl(84, 97%, 66%)
- OKLCH: oklch(0.915 0.204 128.7)
- Relative luminance: 0.8059
- Nearest named color: Chartreuse (#c1f80a, Δ 2.731) — https://brandsweets.com/colors/chartreuse-2
- Moods: vivid
- Page: https://brandsweets.com/colors/b9fc55

## Tints & shades

- Tints (toward white): #bffd63, #c5fd72, #cefd86, #d4fd96, #dafea5, #e0feb4, #e6fec3, #effed7, #f5ffe6, #fbfff5
- Shades (toward black): #adfc36, #a0fb18, #8fec04, #7dce03, #6bb003, #589202, #467402, #315001, #1e3201, #0c1400

## Harmonies

- Complementary: #9754fc
- Analogous: #fcec54, #65fc54
- Triadic: #54b9fc, #fc54b9
- Split-complementary: #5465fc, #ec54fc
- Tetradic: #54fcec, #9754fc, #fc5465

## Colors that go with #b9fc55

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

- **Crimson** #dc143c [pool] — Crimson is paired with #b9fc55 in 4 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), Tequila Sunrise (https://brandsweets.com/palettes/vivid#tequila-sunrise). — https://brandsweets.com/colors/crimson
- **Red** #ff0000 [pool] — Red is paired with #b9fc55 in 5 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 #b9fc55 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 #b9fc55: 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 #b9fc55: 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
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #b9fc55: 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 #b9fc55 in 3 real palettes, including Lay's's brand system and Ikea's brand system, as the lead colour. Seen in: Lay's (https://brandsweets.com/colors/brands/lays-com), Ikea (https://brandsweets.com/colors/brands/ikea-com), Paddle (https://brandsweets.com/colors/brands/paddle-com). — https://brandsweets.com/colors/gold
- **Taupe** #483c32 [pool] — Taupe is paired with #b9fc55 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): 1.23:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #4f8302 (4.59:1); AA: background → #666666 (4.68:1); AAA: text → #3a5f01 (7.45:1); AAA: background → #4a4a4a (7.22:1)
- On black (#000000): 17.12:1 — 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/b9fc55-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: "#b9fc55" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.