# #91ff00

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

## Values

- Hex: `#91ff00`
- RGB: rgb(145, 255, 0)
- HSL: hsl(86, 100%, 50%)
- OKLCH: oklch(0.898 0.257 133.7)
- Relative luminance: 0.7754
- Nearest named color: Acid Green (#8ffe09, Δ 0.359) — https://brandsweets.com/colors/acid-green
- Moods: vivid
- Page: https://brandsweets.com/colors/91ff00

## Tints & shades

- Tints (toward white): #9cff1a, #a7ff33, #afff47, #baff61, #c6ff7a, #d1ff94, #dcffad, #e4ffc2, #f0ffdb, #fbfff5
- Shades (toward black): #82e600, #76d100, #68b800, #5ca300, #4e8a00, #407000, #345c00, #264200, #1a2e00, #0c1400

## Harmonies

- Complementary: #6f00ff
- Analogous: #ffee00, #11ff00
- Triadic: #0091ff, #ff0090
- Split-complementary: #0011ff, #ee00ff
- Tetradic: #00ffee, #6f00ff, #ff0011

## Colors that go with #91ff00

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 #91ff00 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 #91ff00: 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
- **Hot Pink** #ff69b4 [harmony: split] — Hot Pink is a split-complement of #91ff00: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/hotpink
- **Blue** #0000ff [pool] — Two real palettes: Robinhood's brand system and MongoDB's brand system put Blue beside #91ff00, 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
- **Lime Green** #32cd32 [pool] — Two real palettes: Duolingo's brand system and Monster Energy's brand system put Lime Green beside #91ff00, 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
- **Red** #ff0000 [pool] — Red is paired with #91ff00 in two real palettes: 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). — https://brandsweets.com/colors/red
- **Lilac** #c8a2c8 [harmony: split] — Lilac is a split-complement of #91ff00: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/lilac
- **Light Coral** #f08080 [harmony: triadic] — Light Coral completes a triad with #91ff00 — 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): 1.27:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #4b8500 (4.51:1); AA: background → #666666 (4.51:1); AAA: text → #376100 (7.31:1); AAA: background → #474747 (7.3:1)
- On black (#000000): 16.51:1 — 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/91ff00-afbea2-4e56df-212d1f-f1f1e9?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: "#91ff00" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.