# #40fc43

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

## Values

- Hex: `#40fc43`
- RGB: rgb(64, 252, 67)
- HSL: hsl(121, 97%, 62%)
- OKLCH: oklch(0.867 0.265 143)
- Relative luminance: 0.7112
- Nearest named color: Cathode Green (#00ff55, Δ 1.392) — https://brandsweets.com/colors/cathode-green
- Moods: vivid
- Page: https://brandsweets.com/colors/40fc43

## Tints & shades

- Tints (toward white): #54fc57, #63fd66, #77fd7a, #86fd88, #9bfd9c, #affeb0, #befebf, #d2fed3, #e1ffe1, #f5fff5
- Shades (toward black): #22fc26, #04fb08, #03e207, #03c406, #03a605, #028804, #026903, #015003, #013202, #001401

## Harmonies

- Complementary: #fc40f9
- Analogous: #9bfc40, #40fca1
- Triadic: #4340fc, #fc4340
- Split-complementary: #a140fc, #fc409b
- Tetradic: #409bfc, #fc40f9, #fca140

## Colors that go with #40fc43

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 #40fc43 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
- **Hot Pink** #ff69b4 [harmony: split] — Hot Pink is a split-complement of #40fc43: 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 #40fc43: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/plum
- **Blue** #0000ff [pool] — Two real palettes: MongoDB's brand system and Robinhood's brand system put Blue beside #40fc43, 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 #40fc43: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #40fc43: two real palettes: Remix's brand system and Prime Video's brand system, as the lead colour. 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 #40fc43 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
- **Salmon** #fa8072 [harmony: triadic] — Salmon completes a triad with #40fc43 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. — https://brandsweets.com/colors/salmon

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

- On white (#ffffff): 1.38:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #028804 (4.64:1); AA: background → #5e5e5e (4.7:1); AAA: text → #026403 (7.43:1); AAA: background → #424242 (7.29:1)
- On black (#000000): 15.22:1 — 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/40fc43-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: "#40fc43" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.