# #a3ef1f

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

## Values

- Hex: `#a3ef1f`
- RGB: rgb(163, 239, 31)
- HSL: hsl(82, 87%, 53%)
- OKLCH: oklch(0.87 0.226 129.5)
- Relative luminance: 0.6962
- Nearest named color: Acid Green (#8ffe09, Δ 4.335) — https://brandsweets.com/colors/acid-green
- Moods: vivid
- Page: https://brandsweets.com/colors/a3ef1f

## Tints & shades

- Tints (toward white): #adf137, #b5f24a, #bef462, #c6f575, #d0f78d, #d8f8a0, #e2fab7, #e9fbcb, #f3fde2, #fbfef5
- Shades (toward black): #97e510, #87cd0e, #77b50d, #689d0b, #5b8a0a, #4b7208, #3c5b06, #2c4305, #1c2b03, #0d1301

## Harmonies

- Complementary: #6b1fef
- Analogous: #efd41f, #3bef1f
- Triadic: #1fa3ef, #ef1fa3
- Split-complementary: #1f3bef, #d41fef
- Tetradic: #1fefd4, #6b1fef, #ef1f3b

## Colors that go with #a3ef1f

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 #a3ef1f 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 #a3ef1f: 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 #a3ef1f — 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 #a3ef1f 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
- **Blue** #0000ff [pool] — Two real palettes: Robinhood's brand system and MongoDB's brand system put Blue beside #a3ef1f, 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
- **Crimson** #dc143c [pool] — Crimson is paired with #a3ef1f in two real palettes: Wise's brand system and Ferrari's brand system, as the accent. Seen in: Wise (https://brandsweets.com/colors/brands/wise-com), Ferrari (https://brandsweets.com/colors/brands/ferrari-com). — https://brandsweets.com/colors/crimson
- **Gold** #ffd700 [pool] — Gold shows up next to #a3ef1f in two real palettes: Prime Video's brand system and Ikea's brand system, as the lead colour. Seen in: Prime Video (https://brandsweets.com/colors/brands/primevideo-com), Ikea (https://brandsweets.com/colors/brands/ikea-com). — https://brandsweets.com/colors/gold
- **Lime Green** #32cd32 [pool] — Two real palettes: Duolingo's brand system and Monster Energy's brand system put Lime Green beside #a3ef1f, 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

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

- On white (#ffffff): 1.41:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #558109 (4.64:1); AA: background → #5e5e5e (4.61:1); AAA: text → #3f5f07 (7.37:1); AAA: background → #424242 (7.14:1)
- On black (#000000): 14.92:1 — 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/a3ef1f-b0bea2-4e5fdf-222d1f-f1f0e9?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: "#a3ef1f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.