# #1ff43f

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

## Values

- Hex: `#1ff43f`
- RGB: rgb(31, 244, 63)
- HSL: hsl(129, 91%, 54%)
- OKLCH: oklch(0.842 0.265 144.1)
- Relative luminance: 0.6535
- Nearest named color: Becquerel (#4bec13, Δ 2.348) — https://brandsweets.com/colors/becquerel
- Moods: vivid
- Page: https://brandsweets.com/colors/1ff43f

## Tints & shades

- Tints (toward white): #32f550, #4bf765, #5ef775, #77f98a, #8af99b, #9efaac, #b6fcc0, #c9fcd1, #e2fee6, #f5fff7
- Shades (toward black): #0bef2d, #0ad629, #09be24, #08a61f, #078d1b, #067516, #045d12, #03440d, #022c08, #011304

## Harmonies

- Complementary: #f41fd4
- Analogous: #6af41f, #1ff4aa
- Triadic: #3f1ff4, #f43f1f
- Split-complementary: #aa1ff4, #f41f6a
- Tetradic: #1f6af4, #f41fd4, #f4aa1f

## Colors that go with #1ff43f

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: complementary] — Violet sits directly opposite #1ff43f 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
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #1ff43f: 3 real palettes, including Remix's brand system and Prime Video's brand system, as the lead colour. Seen in: Remix (https://brandsweets.com/colors/brands/remix-run), Prime Video (https://brandsweets.com/colors/brands/primevideo-com), Learning App (https://brandsweets.com/palettes/playful#learning-app). — https://brandsweets.com/colors/deepskyblue
- **Hot Pink** #ff69b4 [harmony: split] — Hot Pink is a split-complement of #1ff43f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/hotpink
- **Plum** #dda0dd [harmony: split] — Plum is a split-complement of #1ff43f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/plum
- **Charcoal** #36454f [role] — Charcoal is the body-text near-black for #1ff43f: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. — https://brandsweets.com/colors/charcoal
- **Red** #ff0000 [pool] — Red is paired with #1ff43f 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 #1ff43f 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
- **Yellow Green** #9acd32 [harmony, pool: analogous] — Yellow Green is #1ff43f's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Monster Energy (https://brandsweets.com/colors/brands/monsterenergy-com). — https://brandsweets.com/colors/yellowgreen

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

- On white (#ffffff): 1.49:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #06881a (4.62:1); AA: background → #595959 (4.69:1); AAA: text → #056613 (7.2:1); AAA: background → #3d3d3d (7.28:1)
- On black (#000000): 14.07:1 — 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/1ff43f-a2bea9-ae4edf-1f2d27-ecf1e9?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: "#1ff43f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.