# #c9ef3e

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

## Values

- Hex: `#c9ef3e`
- RGB: rgb(201, 239, 62)
- HSL: hsl(73, 85%, 59%)
- OKLCH: oklch(0.895 0.196 121.3)
- Relative luminance: 0.745
- Nearest named color: Inchworm (#b2ec5d, Δ 3.336) — https://brandsweets.com/colors/inchworm
- Moods: vivid
- Page: https://brandsweets.com/colors/c9ef3e

## Tints & shades

- Tints (toward white): #cef150, #d3f263, #d9f476, #def589, #e3f79c, #e7f8aa, #ecfabd, #f2fbd0, #f7fde3, #fcfef6
- Shades (toward black): #c2ed26, #b5e212, #a2cb10, #8caf0e, #79970c, #627b0a, #4f6308, #394706, #262f04, #0f1302

## Harmonies

- Complementary: #643eef
- Analogous: #efbd3e, #70ef3e
- Triadic: #3ec9ef, #ef3ec9
- Split-complementary: #3e70ef, #bd3eef
- Tetradic: #3eefbd, #643eef, #ef3e70

## Colors that go with #c9ef3e

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

- **Blue** #0000ff [pool] — 4 real palettes, including Robinhood's brand system and Snapchat's brand system put Blue beside #c9ef3e, as the supporting colour. Seen in: Robinhood (https://brandsweets.com/colors/brands/robinhood-com), Snapchat (https://brandsweets.com/colors/brands/snapchat-com), Binance (https://brandsweets.com/colors/brands/binance-com), Bumble (https://brandsweets.com/colors/brands/bumble-com). — https://brandsweets.com/colors/blue
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #c9ef3e: 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), Lagoon (https://brandsweets.com/palettes/vivid#lagoon), Lido (https://brandsweets.com/palettes/vivid#lido). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #c9ef3e in 8 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
- **Denim** #1560bd [pool] — Designers have shipped Denim with #c9ef3e: 4 real palettes, including Ikea's brand system and FIFA's brand system, as the accent. Seen in: Ikea (https://brandsweets.com/colors/brands/ikea-com), FIFA (https://brandsweets.com/colors/brands/fifa-com), LEGO (https://brandsweets.com/colors/brands/lego-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com). — https://brandsweets.com/colors/denim
- **Red** #ff0000 [pool] — Red is paired with #c9ef3e 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), Paddle (https://brandsweets.com/colors/brands/paddle-com), Phantom: The money app that'll take you placesLogo PhantomLogo PhantomLogo Phantom (https://brandsweets.com/colors/brands/phantom-com). — https://brandsweets.com/colors/red
- **Taupe** #483c32 [pool] — Taupe is paired with #c9ef3e in 7 real palettes, including Crayon Box and Calvin Klein's brand system, as the text colour against it. Seen in: Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Calvin Klein (https://brandsweets.com/colors/brands/calvinklein-us), Tommy Hilfiger (https://brandsweets.com/colors/brands/tommy-com), Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove). — https://brandsweets.com/colors/taupe
- **Tomato** #ff6347 [pool] — 4 real palettes, including Crayon Box and Night Market put Tomato beside #c9ef3e, as the lead colour. Seen in: Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Night Market (https://brandsweets.com/palettes/vivid#night-market), Fresh Juice (https://brandsweets.com/palettes/playful#fresh-juice), Lido (https://brandsweets.com/palettes/vivid#lido). — https://brandsweets.com/colors/tomato
- **Plum** #dda0dd [harmony: complementary] — Plum sits directly opposite #c9ef3e 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

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

- On white (#ffffff): 1.32:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #667f0a (4.56:1); AA: background → #636363 (4.55:1); AAA: text → #4c5e08 (7.21:1); AAA: background → #474747 (7.03:1)
- On black (#000000): 15.9:1 — 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/c9ef3e-b5bea2-4e75df-242d1f-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: "#c9ef3e" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.