# #b9c601

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

## Values

- Hex: `#b9c601`
- RGB: rgb(185, 198, 1)
- HSL: hsl(64, 99%, 39%)
- OKLCH: oklch(0.789 0.178 114.5)
- Relative luminance: 0.507
- Nearest named color: yellowgreen (#9acd32, Δ 3.909) — https://brandsweets.com/colors/yellowgreen
- Moods: vivid
- Page: https://brandsweets.com/colors/b9c601

## Tints & shades

- Tints (toward white): #d5e401, #edfe06, #effe25, #f2fe43, #f4fe62, #f6fe7b, #f8fe9a, #faffb8, #fcffd6, #fefff5
- Shades (toward black): #abb701, #98a201, #899301, #767f01, #687001, #555b00, #474c00, #343800, #262900, #131400

## Harmonies

- Complementary: #0e01c6
- Analogous: #c67101, #56c601
- Triadic: #01b9c6, #c601b9
- Split-complementary: #0156c6, #7101c6
- Tetradic: #01c671, #0e01c6, #c60156

## Colors that go with #b9c601

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

- **Cornflower Blue** #6495ed [harmony, pool: split] — Cornflower Blue is a split-complement of #b9c601: 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), Blueprint (https://brandsweets.com/palettes/technical#blueprint), NBA (https://brandsweets.com/colors/brands/nba-com), 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 #b9c601 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Salesforce (https://brandsweets.com/colors/brands/salesforce-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Learning App (https://brandsweets.com/palettes/playful#learning-app), Prime Video (https://brandsweets.com/colors/brands/primevideo-com). — https://brandsweets.com/colors/deepskyblue
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #b9c601: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Disney (https://brandsweets.com/colors/brands/disney-com), Coastal (https://brandsweets.com/palettes/cool#coastal), Beach Hut (https://brandsweets.com/palettes/light#beach-hut). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #b9c601 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), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Diner (https://brandsweets.com/palettes/vivid#diner). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #b9c601: 8 real palettes, including Wikipedia's brand system and Walmart's brand system, as the supporting colour. Seen in: Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Walmart (https://brandsweets.com/colors/brands/walmart-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #b9c601: 4 real palettes, including Google's brand system and Heatwave, as the lead colour. Seen in: Google (https://brandsweets.com/colors/brands/google-com), Heatwave (https://brandsweets.com/palettes/warm#heatwave), Miro (https://brandsweets.com/colors/brands/miro-com), Liquid Death (https://brandsweets.com/colors/brands/liquiddeath-com). — https://brandsweets.com/colors/dodgerblue
- **Red** #ff0000 [pool] — Red is paired with #b9c601 in 5 real palettes, including Wired's brand system and Wise's brand system, as the supporting colour. Seen in: Wired (https://brandsweets.com/colors/brands/wired-com), Wise (https://brandsweets.com/colors/brands/wise-com), Gatorade (https://brandsweets.com/colors/brands/gatorade-com), Paddle (https://brandsweets.com/colors/brands/paddle-com). — https://brandsweets.com/colors/red
- **Steel Blue** #4682b4 [pool] — Designers have shipped Steel Blue with #b9c601: 4 real palettes, including Wired's brand system and Lemon Squeezy's brand system, as the lead colour. Seen in: Wired (https://brandsweets.com/colors/brands/wired-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Olympics (https://brandsweets.com/colors/brands/olympics-com). — https://brandsweets.com/colors/steelblue

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

- On white (#ffffff): 1.88:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #727a01 (4.67:1); AA: background → #4a4a4a (4.7:1); AAA: text → #555b00 (7.28:1); AAA: background → #303030 (7:1)
- On black (#000000): 11.14:1 — 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/b9c601-b9bea2-4e8adf-262d1f-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: "#b9c601" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.