# #21d44e

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

## Values

- Hex: `#21d44e`
- RGB: rgb(33, 212, 78)
- HSL: hsl(135, 73%, 48%)
- OKLCH: oklch(0.76 0.222 146.2)
- Relative luminance: 0.4796
- Nearest named color: Lime Green (#32cd32, Δ 2.341) — https://brandsweets.com/colors/limegreen
- Moods: vivid
- Page: https://brandsweets.com/colors/21d44e

## Tints & shades

- Tints (toward white): #30df5b, #46e26d, #5ce67e, #72e990, #88eca1, #9ef0b2, #b4f3c4, #caf7d5, #e0fae7, #f6fef8
- Shades (toward black): #1ec247, #1bac3f, #189a39, #158431, #12732a, #0f6124, #0c4b1c, #093915, #06230d, #031206

## Harmonies

- Complementary: #d421a7
- Analogous: #4ed421, #21d4a7
- Triadic: #4e21d4, #d44e21
- Split-complementary: #a721d4, #d4214e
- Tetradic: #214ed4, #d421a7, #d4a721

## Colors that go with #21d44e

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

- **Blue** #0000ff [pool] — 4 real palettes, including Minecraft's brand system and MongoDB's brand system put Blue beside #21d44e, as the accent. Seen in: Minecraft (https://brandsweets.com/colors/brands/minecraft-net), MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Spotify (https://brandsweets.com/colors/brands/spotify), Unity (https://brandsweets.com/colors/brands/unity-com). — https://brandsweets.com/colors/blue
- **Taupe** #483c32 [pool] — Taupe is paired with #21d44e in 8 real palettes, including WhatsApp's brand system and Obsidian's brand system, as the supporting colour. Seen in: WhatsApp (https://brandsweets.com/colors/brands/whatsapp-com), Obsidian (https://brandsweets.com/colors/brands/obsidian-md), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), 7-Eleven (https://brandsweets.com/colors/brands/7-eleven-com). — https://brandsweets.com/colors/taupe
- **Violet** #ee82ee [harmony: complementary] — Violet sits directly opposite #21d44e 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, pool: split] — Hot Pink is a split-complement of #21d44e: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Terminal (https://brandsweets.com/palettes/technical#terminal). — https://brandsweets.com/colors/hotpink
- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #21d44e: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Docker (https://brandsweets.com/colors/brands/docker-com), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern). — https://brandsweets.com/colors/charcoal
- **Cornflower Blue** #6495ed [harmony, pool: triadic] — Cornflower Blue completes a triad with #21d44e — 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
- **Dark Orange** #ff8c00 [pool] — Dark Orange shows up next to #21d44e in 3 real palettes, including Learning App and Playground, as the accent. Seen in: Learning App (https://brandsweets.com/palettes/playful#learning-app), Playground (https://brandsweets.com/palettes/bold#playground), Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove). — https://brandsweets.com/colors/darkorange
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #21d44e: 3 real palettes, including Learning App and Remix's brand system, as the supporting colour. Seen in: Learning App (https://brandsweets.com/palettes/playful#learning-app), Remix (https://brandsweets.com/colors/brands/remix-run), Prime Video (https://brandsweets.com/colors/brands/primevideo-com). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 1.98:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #158932 (4.51:1); AA: background → #474747 (4.69:1); AAA: text → #106525 (7.22:1); AAA: background → #2b2b2b (7.14:1)
- On black (#000000): 10.59:1 — 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/21d44e-a2beac-b759d4-1f2d29-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: "#21d44e" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.