# #42b366

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

## Values

- Hex: `#42b366`
- RGB: rgb(66, 179, 102)
- HSL: hsl(139, 46%, 48%)
- OKLCH: oklch(0.684 0.152 150.7)
- Relative luminance: 0.3436
- Nearest named color: Green Mana (#26b467, Δ 1.31) — https://brandsweets.com/colors/green-mana
- Moods: neutral
- Page: https://brandsweets.com/colors/42b366

## Tints & shades

- Tints (toward white): #50be73, #63c582, #75cc91, #88d3a0, #9adaaf, #ade1bd, #c0e8cc, #d2eedb, #e5f5ea, #f8fcf9
- Shades (toward black): #3da45d, #369153, #30824a, #297040, #246137, #1e522f, #173f24, #12301c, #0b1e11, #060f08

## Harmonies

- Complementary: #b3428f
- Analogous: #57b342, #42b39e
- Triadic: #6642b3, #b36642
- Split-complementary: #9e42b3, #b34257
- Tetradic: #4257b3, #b3428f, #b39e42

## Colors that go with #42b366

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #42b366: softer than #000 and cool enough to feel like part of the same palette. Seen in: Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), Zendesk (https://brandsweets.com/colors/brands/zendesk-com), N26 (https://brandsweets.com/colors/brands/n26-com), Lagoon (https://brandsweets.com/palettes/vivid#lagoon). — https://brandsweets.com/colors/charcoal
- **Mustard Yellow** #ffdb58 [pool] — 4 real palettes, including Meadow and Citrus Grove put Mustard Yellow beside #42b366, as the supporting colour. Seen in: Meadow (https://brandsweets.com/palettes/light#meadow), Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove), Diner (https://brandsweets.com/palettes/vivid#diner), Fresh Juice (https://brandsweets.com/palettes/playful#fresh-juice). — https://brandsweets.com/colors/mustard
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #42b366 in 5 real palettes, including Khan Academy's brand system and Console Light, as the accent. Seen in: Khan Academy (https://brandsweets.com/colors/brands/khanacademy-org), Console Light (https://brandsweets.com/palettes/technical#console-light), Telehealth (https://brandsweets.com/palettes/modern#telehealth), Brilliant (https://brandsweets.com/colors/brands/brilliant-org). — https://brandsweets.com/colors/royalblue
- **Taupe** #483c32 [pool] — Taupe is paired with #42b366 in 13 real palettes, including Chime's brand system and Undergrowth, as the lead colour. Seen in: Chime (https://brandsweets.com/colors/brands/chime-com), Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Obsidian (https://brandsweets.com/colors/brands/obsidian-md), Meadow (https://brandsweets.com/palettes/light#meadow). — https://brandsweets.com/colors/taupe
- **Fuchsia** #ff00ff [harmony: complementary] — Fuchsia sits directly opposite #42b366 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/fuchsia
- **Medium Purple** #9370db [harmony, pool: split] — Medium Purple is a split-complement of #42b366: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Obsidian (https://brandsweets.com/colors/brands/obsidian-md), Next.js (https://brandsweets.com/colors/brands/nextjs-org). — https://brandsweets.com/colors/mediumpurple
- **Blue** #0000ff [pool] — 3 real palettes, including Spotify's brand system and Unity's brand system put Blue beside #42b366, as the accent. Seen in: Spotify (https://brandsweets.com/colors/brands/spotify), Unity (https://brandsweets.com/colors/brands/unity-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net). — https://brandsweets.com/colors/blue
- **Cornflower Blue** #6495ed [harmony, pool: triadic] — Cornflower Blue completes a triad with #42b366 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Terminal (https://brandsweets.com/palettes/technical#terminal), Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/cornflowerblue

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

- On white (#ffffff): 2.67:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #32864c (4.52:1); AA: background → #363636 (4.53:1); AAA: text → #256539 (7:1); AAA: background → #121212 (7.02:1)
- On black (#000000): 7.87:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **DuckDuckGo** — accent #38b26a (Δ 0.824) — https://brandsweets.com/colors/brands/duckduckgo-com

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/42b366-a2beae-c059d4-1f2d2a-ebf1e9?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: "#42b366" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.