# #31ef01

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

## Values

- Hex: `#31ef01`
- RGB: rgb(49, 239, 1)
- HSL: hsl(108, 99%, 47%)
- OKLCH: oklch(0.829 0.275 141.5)
- Relative luminance: 0.6239
- Nearest named color: Becquerel (#4bec13, Δ 1.333) — https://brandsweets.com/colors/becquerel
- Moods: vivid
- Page: https://brandsweets.com/colors/31ef01

## Tints & shades

- Tints (toward white): #3cfe0b, #50fe25, #65fe3e, #79fe58, #91fe76, #a6fe8f, #baffa9, #ceffc2, #e3ffdb, #f7fff5
- Shades (toward black): #2dda01, #27c101, #23ad01, #1f9801, #1b8401, #166b01, #125600, #0d4200, #082900, #041400

## Harmonies

- Complementary: #bf01ef
- Analogous: #a7ef01, #01ef48
- Triadic: #0131ef, #ef0131
- Split-complementary: #4801ef, #ef01a7
- Tetradic: #01a7ef, #bf01ef, #ef4801

## Colors that go with #31ef01

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 #31ef01 — 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 #31ef01 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 #31ef01: 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 #31ef01: 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 #31ef01: 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 #31ef01 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 #31ef01 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 #31ef01 — 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): 1.56:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #1c8901 (4.54:1); AA: background → #575757 (4.64:1); AAA: text → #156501 (7.26:1); AAA: background → #3b3b3b (7.19:1)
- On black (#000000): 13.48:1 — 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/31ef01-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: "#31ef01" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.