# #b9d421

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

## Values

- Hex: `#b9d421`
- RGB: rgb(185, 212, 33)
- HSL: hsl(69, 73%, 48%)
- OKLCH: oklch(0.822 0.185 118.8)
- Relative luminance: 0.5751
- Nearest named color: Badass Grass (#b4da55, Δ 2.86) — https://brandsweets.com/colors/badass-grass
- Moods: vivid
- Page: https://brandsweets.com/colors/b9d421

## Tints & shades

- Tints (toward white): #c4df30, #cbe246, #d1e65c, #d7e972, #ddec88, #e4f09e, #eaf3b4, #f0f7ca, #f6fae0, #fdfef6
- Shades (toward black): #aac21e, #96ac1b, #879a18, #748415, #647312, #55610f, #424b0c, #323909, #1f2306, #0f1203

## Harmonies

- Complementary: #3c21d4
- Analogous: #d49521, #60d421
- Triadic: #21b9d4, #d421b9
- Split-complementary: #2160d4, #9521d4
- Tetradic: #21d495, #3c21d4, #d42160

## Colors that go with #b9d421

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

- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #b9d421: 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), Coastal (https://brandsweets.com/palettes/cool#coastal), Disney (https://brandsweets.com/colors/brands/disney-com), Lido (https://brandsweets.com/palettes/vivid#lido). — https://brandsweets.com/colors/charcoal
- **Cornflower Blue** #6495ed [harmony, pool: split] — Cornflower Blue is a split-complement of #b9d421: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: NBA (https://brandsweets.com/colors/brands/nba-com), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [harmony, pool: triadic] — Deep Sky Blue completes a triad with #b9d421 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Prime Video (https://brandsweets.com/colors/brands/primevideo-com), Salesforce (https://brandsweets.com/colors/brands/salesforce-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Learning App (https://brandsweets.com/palettes/playful#learning-app). — https://brandsweets.com/colors/deepskyblue
- **Blue** #0000ff [pool] — 5 real palettes, including Binance's brand system and Minecraft's brand system put Blue beside #b9d421, as the accent. Seen in: Binance (https://brandsweets.com/colors/brands/binance-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Robinhood (https://brandsweets.com/colors/brands/robinhood-com), Bumble (https://brandsweets.com/colors/brands/bumble-com). — https://brandsweets.com/colors/blue
- **Crimson** #dc143c [pool] — Crimson is paired with #b9d421 in 7 real palettes, including Wise's brand system and Tabloid, as the accent. Seen in: Wise (https://brandsweets.com/colors/brands/wise-com), Tabloid (https://brandsweets.com/palettes/editorial#tabloid), Lay's (https://brandsweets.com/colors/brands/lays-com), Diner (https://brandsweets.com/palettes/vivid#diner). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #b9d421: 7 real palettes, including Wikipedia's brand system and Ikea's brand system, as the supporting colour. Seen in: Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Ikea (https://brandsweets.com/colors/brands/ikea-com), LEGO (https://brandsweets.com/colors/brands/lego-com), Walmart (https://brandsweets.com/colors/brands/walmart-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #b9d421: 4 real palettes, including Miro's brand system and Star Wars's brand system, as the accent. Seen in: Miro (https://brandsweets.com/colors/brands/miro-com), Star Wars (https://brandsweets.com/colors/brands/starwars-com), Google (https://brandsweets.com/colors/brands/google-com), Heatwave (https://brandsweets.com/palettes/warm#heatwave). — https://brandsweets.com/colors/dodgerblue
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #b9d421 in 4 real palettes, including Google's brand system and Streetwear, as the supporting colour. Seen in: Google (https://brandsweets.com/colors/brands/google-com), Streetwear (https://brandsweets.com/palettes/bold#streetwear), Electric Lime (https://brandsweets.com/palettes/vivid#electric-lime), Heatwave (https://brandsweets.com/palettes/warm#heatwave). — https://brandsweets.com/colors/orangered

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

- On white (#ffffff): 1.68:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #6c7c13 (4.64:1); AA: background → #545454 (4.51:1); AAA: text → #515d0e (7.19:1); AAA: background → #363636 (7.19:1)
- On black (#000000): 12.5:1 — 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/b9d421-b7bea2-4e7edf-252d1f-f1eee9?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: "#b9d421" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.