# #40ff00

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

## Values

- Hex: `#40ff00`
- RGB: rgb(64, 255, 0)
- HSL: hsl(105, 100%, 50%)
- OKLCH: oklch(0.872 0.287 141)
- Relative luminance: 0.7261
- Nearest named color: Green Screen (#22ff00, Δ 0.864) — https://brandsweets.com/colors/green-screen
- Moods: vivid
- Page: https://brandsweets.com/colors/40ff00

## Tints & shades

- Tints (toward white): #53ff1a, #66ff33, #75ff47, #88ff61, #9cff7a, #afff94, #c2ffad, #d1ffc2, #e4ffdb, #f7fff5
- Shades (toward black): #39e600, #34d100, #2eb800, #29a300, #228a00, #1c7000, #175c00, #114200, #0b2e00, #051400

## Harmonies

- Complementary: #bf00ff
- Analogous: #bfff00, #00ff40
- Triadic: #0040ff, #ff0040
- Split-complementary: #4000ff, #ff00bf
- Tetradic: #00bfff, #bf00ff, #ff4000

## Colors that go with #40ff00

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 #40ff00 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 [harmony, pool: triadic] — Deep Sky Blue completes a triad with #40ff00 — 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). — https://brandsweets.com/colors/deepskyblue
- **Hot Pink** #ff69b4 [harmony: split] — Hot Pink is a split-complement of #40ff00: 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: MongoDB's brand system and Robinhood's brand system put Blue beside #40ff00, as the accent. Seen in: MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Robinhood (https://brandsweets.com/colors/brands/robinhood-com). — https://brandsweets.com/colors/blue
- **Charcoal** #36454f [role] — Charcoal is the body-text near-black for #40ff00: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. — https://brandsweets.com/colors/charcoal
- **Lilac** #c8a2c8 [harmony: split] — Lilac is a split-complement of #40ff00: 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 #40ff00 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. — https://brandsweets.com/colors/lightcoral
- **Medium Aquamarine** #66cdaa [harmony: analogous] — Medium Aquamarine is #40ff00's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. — https://brandsweets.com/colors/mediumaquamarine

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

- On white (#ffffff): 1.35:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #218500 (4.75:1); AA: background → #616161 (4.58:1); AAA: text → #1a6600 (7.13:1); AAA: background → #454545 (7.09:1)
- On black (#000000): 15.52:1 — AA pass, AA-large pass, AAA pass

## Curated palettes containing it

- **Laser** (neon, vivid, dark, technical) — #39ff14, #bf00ff, #00e5ff, #07070d, #eefaf0 — Laser green, violet and cyan — the synthwave/gaming set; keep the type near-white and let one neon own each screen. — tool: https://brandsweets.com/palettes/new/39ff14-bf00ff-00e5ff-07070d-eefaf0 — collection: https://brandsweets.com/palettes/neon

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/40ff00-a6bea2-754edf-1f2d22-eff1e9?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: "#40ff00" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.