# #37ae69

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

## Values

- Hex: `#37ae69`
- RGB: rgb(55, 174, 105)
- HSL: hsl(145, 52%, 45%)
- OKLCH: oklch(0.668 0.147 153.7)
- Relative luminance: 0.321
- Nearest named color: mediumseagreen (#3cb371, Δ 1.652) — https://brandsweets.com/colors/mediumseagreen
- Moods: neutral
- Page: https://brandsweets.com/colors/37ae69

## Tints & shades

- Tints (toward white): #3dc274, #54c985, #68cf93, #7bd5a1, #92ddb1, #a6e3bf, #b9e9cd, #cdefdb, #e4f6ec, #f7fdf9
- Shades (toward black): #329f5f, #2d8f56, #28804d, #237044, #1f613a, #184e2f, #143e25, #0f2f1c, #0a1f13, #051009

## Harmonies

- Complementary: #ae377d
- Analogous: #41ae37, #37aea4
- Triadic: #6937ae, #ae6937
- Split-complementary: #a437ae, #ae3741
- Tetradic: #3741ae, #ae377d, #aea437

## Colors that go with #37ae69

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 #37ae69: 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
- **Blue** #0000ff [pool] — 4 real palettes, including Unity's brand system and Spotify's brand system put Blue beside #37ae69, as the supporting colour. Seen in: Unity (https://brandsweets.com/colors/brands/unity-com), Spotify (https://brandsweets.com/colors/brands/spotify), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Kia (https://brandsweets.com/colors/brands/kia-com). — https://brandsweets.com/colors/blue
- **Mustard Yellow** #ffdb58 [pool] — 4 real palettes, including Meadow and Diner put Mustard Yellow beside #37ae69, as the supporting colour. Seen in: Meadow (https://brandsweets.com/palettes/light#meadow), Diner (https://brandsweets.com/palettes/vivid#diner), Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove), Fresh Juice (https://brandsweets.com/palettes/playful#fresh-juice). — https://brandsweets.com/colors/mustard
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #37ae69 in 5 real palettes, including Console Light and Telehealth, as the lead colour. Seen in: Console Light (https://brandsweets.com/palettes/technical#console-light), Telehealth (https://brandsweets.com/palettes/modern#telehealth), Khan Academy (https://brandsweets.com/colors/brands/khanacademy-org), Brilliant (https://brandsweets.com/colors/brands/brilliant-org). — https://brandsweets.com/colors/royalblue
- **Taupe** #483c32 [pool] — Taupe is paired with #37ae69 in 12 real palettes, including Undergrowth and Chime's brand system, as the surface under it. Seen in: Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Chime (https://brandsweets.com/colors/brands/chime-com), 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 #37ae69 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 #37ae69: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Next.js (https://brandsweets.com/colors/brands/nextjs-org), Obsidian (https://brandsweets.com/colors/brands/obsidian-md). — https://brandsweets.com/colors/mediumpurple
- **Cornflower Blue** #6495ed [harmony, pool: triadic] — Cornflower Blue completes a triad with #37ae69 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Spotify (https://brandsweets.com/colors/brands/spotify), Terminal (https://brandsweets.com/palettes/technical#terminal). — https://brandsweets.com/colors/cornflowerblue

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

- On white (#ffffff): 2.83:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #2a844f (4.65:1); AA: background → #303030 (4.66:1); AAA: text → #20653d (7.02:1); AAA: background → #080808 (7.08:1)
- On black (#000000): 7.42:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **DuckDuckGo** — accent #38b26a (Δ 1.173) — 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/37ae69-a2beb1-cc59d4-1f2d2b-eaf1e9?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: "#37ae69" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.