# #39ef0b

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

## Values

- Hex: `#39ef0b`
- RGB: rgb(57, 239, 11)
- HSL: hsl(108, 91%, 49%)
- OKLCH: oklch(0.83 0.272 141.2)
- Relative luminance: 0.6263
- Nearest named color: Becquerel (#4bec13, Δ 1.075) — https://brandsweets.com/colors/becquerel
- Moods: vivid
- Page: https://brandsweets.com/colors/39ef0b

## Tints & shades

- Tints (toward white): #4af41f, #5df637, #71f750, #85f868, #99f980, #a8fa94, #bcfbac, #d0fcc5, #e3fddd, #f7fff5
- Shades (toward black): #34db0a, #2ec309, #2aaf08, #249707, #1f8406, #196b05, #155804, #0f3f03, #0a2c02, #051301

## Harmonies

- Complementary: #c10bef
- Analogous: #aaef0b, #0bef4f
- Triadic: #0b39ef, #ef0b39
- Split-complementary: #4f0bef, #ef0baa
- Tetradic: #0baaef, #c10bef, #ef4f0b

## Colors that go with #39ef0b

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 #39ef0b — 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), Learning App (https://brandsweets.com/palettes/playful#learning-app), Prime Video (https://brandsweets.com/colors/brands/primevideo-com). — https://brandsweets.com/colors/deepskyblue
- **Violet** #ee82ee [harmony: complementary] — Violet sits directly opposite #39ef0b 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/violet
- **Hot Pink** #ff69b4 [harmony: split] — Hot Pink is a split-complement of #39ef0b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/hotpink
- **Charcoal** #36454f [role] — Charcoal is the body-text near-black for #39ef0b: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. — https://brandsweets.com/colors/charcoal
- **Plum** #dda0dd [harmony: split] — Plum is a split-complement of #39ef0b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/plum
- **Red** #ff0000 [pool] — Red is paired with #39ef0b in two real palettes: Gatorade's brand system and Wise's brand system, as the supporting colour. Seen in: Gatorade (https://brandsweets.com/colors/brands/gatorade-com), Wise (https://brandsweets.com/colors/brands/wise-com). — https://brandsweets.com/colors/red
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #39ef0b in two real palettes: MongoDB's brand system and Brilliant's brand system, as the supporting colour. Seen in: MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Brilliant (https://brandsweets.com/colors/brands/brilliant-org). — https://brandsweets.com/colors/royalblue
- **Light Coral** #f08080 [harmony: triadic] — Light Coral completes a triad with #39ef0b — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. — https://brandsweets.com/colors/lightcoral

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

- On white (#ffffff): 1.55:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #208806 (4.58:1); AA: background → #595959 (4.51:1); AAA: text → #186605 (7.14:1); AAA: background → #3b3b3b (7.21:1)
- On black (#000000): 13.53:1 — 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/39ef0b-a4bea2-7c4edf-1f2d23-eff1e9?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: "#39ef0b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.