# #a3ff05

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

## Values

- Hex: `#a3ff05`
- RGB: rgb(163, 255, 5)
- HSL: hsl(82, 100%, 51%)
- OKLCH: oklch(0.907 0.247 131.1)
- Relative luminance: 0.7932
- Nearest named color: greenyellow (#adff2f, Δ 1.592) — https://brandsweets.com/colors/greenyellow
- Moods: vivid
- Page: https://brandsweets.com/colors/a3ff05

## Tints & shades

- Tints (toward white): #adff1f, #b4ff33, #beff4d, #c7ff66, #d0ff80, #d8ff94, #e1ffad, #eaffc7, #f2ffdb, #fbfff5
- Shades (toward black): #95eb00, #88d600, #78bd00, #67a300, #5a8f00, #4a7500, #3a5c00, #2a4200, #1d2e00, #0d1400

## Harmonies

- Complementary: #6105ff
- Analogous: #ffde05, #26ff05
- Triadic: #05a3ff, #ff05a3
- Split-complementary: #0526ff, #de05ff
- Tetradic: #05ffde, #6105ff, #ff0526

## Colors that go with #a3ff05

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 #a3ff05 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
- **Blue** #0000ff [pool] — 3 real palettes, including Robinhood's brand system and MongoDB's brand system put Blue beside #a3ff05, as the supporting colour. Seen in: Robinhood (https://brandsweets.com/colors/brands/robinhood-com), MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Snapchat (https://brandsweets.com/colors/brands/snapchat-com). — https://brandsweets.com/colors/blue
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #a3ff05: 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
- **Red** #ff0000 [pool] — Red is paired with #a3ff05 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
- **Hot Pink** #ff69b4 [harmony: split] — Hot Pink is a split-complement of #a3ff05: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/hotpink
- **Crimson** #dc143c [pool] — Crimson is paired with #a3ff05 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
- **Deep Pink** #ff1493 [pool] — Two real palettes: Arcade and JetBrains's brand system put Deep Pink beside #a3ff05, as the lead colour. Seen in: Arcade (https://brandsweets.com/palettes/vivid#arcade), JetBrains (https://brandsweets.com/colors/brands/jetbrains-com). — https://brandsweets.com/colors/deeppink
- **Lime Green** #32cd32 [pool] — Two real palettes: Duolingo's brand system and Monster Energy's brand system put Lime Green beside #a3ff05, 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): 1.25:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #518000 (4.73:1); AA: background → #666666 (4.61:1); AAA: text → #3d6100 (7.22:1); AAA: background → #4a4a4a (7.12:1)
- On black (#000000): 16.86:1 — 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/a3ff05-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: "#a3ff05" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.