# #9def39

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

## Values

- Hex: `#9def39`
- RGB: rgb(157, 239, 57)
- HSL: hsl(87, 85%, 58%)
- OKLCH: oklch(0.867 0.219 131.4)
- Relative luminance: 0.692
- Nearest named color: Inchworm (#b2ec5d, Δ 3.918) — https://brandsweets.com/colors/inchworm
- Moods: vivid
- Page: https://brandsweets.com/colors/9def39

## Tints & shades

- Tints (toward white): #a6f04c, #b0f25f, #b9f471, #c2f584, #ccf797, #d5f8aa, #defabd, #e8fbd0, #f1fde3, #fafef6
- Shades (toward black): #91ed21, #82de12, #74c610, #64aa0e, #56920c, #487b0a, #375e08, #2a4706, #192a03, #0b1302

## Harmonies

- Complementary: #8b39ef
- Analogous: #efe639, #42ef39
- Triadic: #399def, #ef399d
- Split-complementary: #3942ef, #e639ef
- Tetradic: #39efe6, #8b39ef, #ef3942

## Colors that go with #9def39

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

- **Violet** #ee82ee [harmony, pool: complementary] — Violet sits directly opposite #9def39 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Gumroad (https://brandsweets.com/colors/brands/gumroad-com). — https://brandsweets.com/colors/violet
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #9def39: 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). — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [harmony, pool: triadic] — Deep Sky Blue completes a triad with #9def39 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Remix (https://brandsweets.com/colors/brands/remix-run), Prime Video (https://brandsweets.com/colors/brands/primevideo-com). — https://brandsweets.com/colors/deepskyblue
- **Red** #ff0000 [pool] — Red is paired with #9def39 in 3 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), Heineken (https://brandsweets.com/colors/brands/heineken-com). — https://brandsweets.com/colors/red
- **Hot Pink** #ff69b4 [harmony: split] — Hot Pink is a split-complement of #9def39: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/hotpink
- **Blue** #0000ff [pool] — Two real palettes: Robinhood's brand system and MongoDB's brand system put Blue beside #9def39, as the supporting colour. Seen in: Robinhood (https://brandsweets.com/colors/brands/robinhood-com), MongoDB (https://brandsweets.com/colors/brands/mongodb-com). — https://brandsweets.com/colors/blue
- **Lime Green** #32cd32 [pool] — Two real palettes: Duolingo's brand system and Monster Energy's brand system put Lime Green beside #9def39, as the lead colour. Seen in: Duolingo (https://brandsweets.com/colors/brands/duolingo), Monster Energy (https://brandsweets.com/colors/brands/monsterenergy-com). — https://brandsweets.com/colors/limegreen
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #9def39 in two real palettes: Klaviyo's brand system and Heineken's brand system, as the accent. Seen in: Klaviyo (https://brandsweets.com/colors/brands/klaviyo-com), Heineken (https://brandsweets.com/colors/brands/heineken-com). — https://brandsweets.com/colors/mediumseagreen

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

- On white (#ffffff): 1.42:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #4d840b (4.54:1); AA: background → #5e5e5e (4.58:1); AAA: text → #3a6308 (7.08:1); AAA: background → #424242 (7.1:1)
- On black (#000000): 14.84:1 — 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/9def39-aebea2-4e53df-212d1f-f1f1e9?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: "#9def39" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.