# #b5cf3f

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

## Values

- Hex: `#b5cf3f`
- RGB: rgb(181, 207, 63)
- HSL: hsl(71, 60%, 53%)
- OKLCH: oklch(0.809 0.167 119.2)
- Relative luminance: 0.5481
- Nearest named color: Badass Grass (#b4da55, Δ 2.882) — https://brandsweets.com/colors/badass-grass
- Moods: vivid
- Page: https://brandsweets.com/colors/b5cf3f

## Tints & shades

- Tints (toward white): #bdd454, #c3d864, #cbdd78, #d1e189, #d9e79d, #dfebad, #e7f0c2, #eef4d2, #f6f9e7, #fcfdf7
- Shades (toward black): #a9c431, #97af2c, #869b27, #748722, #66761e, #546218, #434e13, #31390e, #202509, #0e1004

## Harmonies

- Complementary: #5a3fcf
- Analogous: #cfa23f, #6dcf3f
- Triadic: #3fb5cf, #cf3fb5
- Split-complementary: #3f6dcf, #a23fcf
- Tetradic: #3fcfa2, #5a3fcf, #cf3f6d

## Colors that go with #b5cf3f

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 #b5cf3f: 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), Zendesk (https://brandsweets.com/colors/brands/zendesk-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut). — https://brandsweets.com/colors/charcoal
- **Cornflower Blue** #6495ed [harmony, pool: split] — Cornflower Blue is a split-complement of #b5cf3f: 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), 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 #b5cf3f — 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), Prime Video (https://brandsweets.com/colors/brands/primevideo-com), Learning App (https://brandsweets.com/palettes/playful#learning-app). — https://brandsweets.com/colors/deepskyblue
- **Plum** #dda0dd [harmony, pool: complementary] — Plum sits directly opposite #b5cf3f on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Blossom (https://brandsweets.com/palettes/light#blossom). — https://brandsweets.com/colors/plum
- **Crimson** #dc143c [pool] — Crimson is paired with #b5cf3f 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), Diner (https://brandsweets.com/palettes/vivid#diner), Lay's (https://brandsweets.com/colors/brands/lays-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #b5cf3f: 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), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #b5cf3f: 4 real palettes, including Google's brand system and Miro's brand system, as the lead colour. Seen in: Google (https://brandsweets.com/colors/brands/google-com), Miro (https://brandsweets.com/colors/brands/miro-com), Star Wars (https://brandsweets.com/colors/brands/starwars-com), Heatwave (https://brandsweets.com/palettes/warm#heatwave). — https://brandsweets.com/colors/dodgerblue
- **Gold** #ffd700 [pool] — Gold shows up next to #b5cf3f in 4 real palettes, including Binance's brand system and Paddle's brand system, as the lead colour. Seen in: Binance (https://brandsweets.com/colors/brands/binance-com), Paddle (https://brandsweets.com/colors/brands/paddle-com), Ikea (https://brandsweets.com/colors/brands/ikea-com), Star Wars (https://brandsweets.com/colors/brands/starwars-com). — https://brandsweets.com/colors/gold

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

- On white (#ffffff): 1.76:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #6d7e20 (4.51:1); AA: background → #4f4f4f (4.67:1); AAA: text → #515e17 (7.09:1); AAA: background → #333333 (7.2:1)
- On black (#000000): 11.96:1 — 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/b5cf3f-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: "#b5cf3f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.