# #b3d421

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

## Values

- Hex: `#b3d421`
- RGB: rgb(179, 212, 33)
- HSL: hsl(71, 73%, 48%)
- OKLCH: oklch(0.817 0.188 120.6)
- Relative luminance: 0.5678
- Nearest named color: Conifer (#b1dd52, Δ 3.05) — https://brandsweets.com/colors/conifer
- Moods: vivid
- Page: https://brandsweets.com/colors/b3d421

## Tints & shades

- Tints (toward white): #bfdf30, #c5e246, #cce65c, #d3e972, #daec88, #e1f09e, #e8f3b4, #eff7ca, #f5fae0, #fcfef6
- Shades (toward black): #a4c21e, #91ac1b, #839a18, #708415, #617312, #52610f, #3f4b0c, #303909, #1e2306, #0f1203

## Harmonies

- Complementary: #4221d4
- Analogous: #d49b21, #5ad421
- Triadic: #21b3d4, #d421b3
- Split-complementary: #215ad4, #9b21d4
- Tetradic: #21d49b, #4221d4, #d4215a

## Colors that go with #b3d421

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

- **Deep Sky Blue** #00bfff [harmony, pool: triadic] — Deep Sky Blue completes a triad with #b3d421 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Learning App (https://brandsweets.com/palettes/playful#learning-app), Prime Video (https://brandsweets.com/colors/brands/primevideo-com), Salesforce (https://brandsweets.com/colors/brands/salesforce-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint). — https://brandsweets.com/colors/deepskyblue
- **Blue** #0000ff [pool] — 5 real palettes, including Minecraft's brand system and Binance's brand system put Blue beside #b3d421, as the accent. Seen in: Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Binance (https://brandsweets.com/colors/brands/binance-com), MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Robinhood (https://brandsweets.com/colors/brands/robinhood-com). — https://brandsweets.com/colors/blue
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #b3d421: 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). — https://brandsweets.com/colors/charcoal
- **Cornflower Blue** #6495ed [harmony, pool: split] — Cornflower Blue is a split-complement of #b3d421: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com), NBA (https://brandsweets.com/colors/brands/nba-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #b3d421 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 #b3d421: 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
- **Red** #ff0000 [pool] — Red is paired with #b3d421 in 5 real palettes, including Wise's brand system and Gatorade's brand system, as the lead colour. Seen in: Wise (https://brandsweets.com/colors/brands/wise-com), Gatorade (https://brandsweets.com/colors/brands/gatorade-com), Wired (https://brandsweets.com/colors/brands/wired-com), Paddle (https://brandsweets.com/colors/brands/paddle-com). — https://brandsweets.com/colors/red
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #b3d421 in 5 real palettes, including NBA's brand system and Walmart's brand system, as the supporting colour. Seen in: NBA (https://brandsweets.com/colors/brands/nba-com), Walmart (https://brandsweets.com/colors/brands/walmart-com), Disney (https://brandsweets.com/colors/brands/disney-com), MongoDB (https://brandsweets.com/colors/brands/mongodb-com). — https://brandsweets.com/colors/royalblue

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

- On white (#ffffff): 1.7:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #687c13 (4.69:1); AA: background → #525252 (4.6:1); AAA: text → #4e5d0e (7.25:1); AAA: background → #363636 (7.11:1)
- On black (#000000): 12.36:1 — 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/b3d421-b6bea2-4e7adf-252d1f-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: "#b3d421" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.