# #1bf31f

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

## Values

- Hex: `#1bf31f`
- RGB: rgb(27, 243, 31)
- HSL: hsl(121, 90%, 53%)
- OKLCH: oklch(0.837 0.277 142.7)
- Relative luminance: 0.6443
- Nearest named color: Becquerel (#4bec13, Δ 2.11) — https://brandsweets.com/colors/becquerel
- Moods: vivid
- Page: https://brandsweets.com/colors/1bf31f

## Tints & shades

- Tints (toward white): #34f437, #47f54a, #5ff762, #72f875, #8bf98d, #9efaa0, #b6fbb7, #cafccb, #e2fde2, #f5fef5
- Shades (toward black): #0ce910, #0bd00e, #0ab80d, #08a00b, #078d0a, #067408, #055c06, #044405, #022c03, #011301

## Harmonies

- Complementary: #f31bef
- Analogous: #84f31b, #1bf38b
- Triadic: #1f1bf3, #f31f1b
- Split-complementary: #8b1bf3, #f31b84
- Tetradic: #1b84f3, #f31bef, #f38b1b

## Colors that go with #1bf31f

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 #1bf31f 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 #1bf31f: 3 real palettes, including Remix's brand system and Learning App, as the lead colour. 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
- **Hot Pink** #ff69b4 [harmony: split] — Hot Pink is a split-complement of #1bf31f: 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 #1bf31f: 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 #1bf31f: 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 #1bf31f 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
- **Light Coral** #f08080 [harmony: triadic] — Light Coral completes a triad with #1bf31f — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. — https://brandsweets.com/colors/lightcoral
- **Cornflower Blue** #6495ed [harmony: triadic] — Cornflower Blue completes a triad with #1bf31f — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. — https://brandsweets.com/colors/cornflowerblue

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

- On white (#ffffff): 1.51:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #078809 (4.63:1); AA: background → #595959 (4.63:1); AAA: text → #056607 (7.22:1); AAA: background → #3d3d3d (7.18:1)
- On black (#000000): 13.89:1 — 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/1bf31f-a2bea6-9b4edf-1f2d26-edf1e9?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: "#1bf31f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.