# #21de73

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

## Values

- Hex: `#21de73`
- RGB: rgb(33, 222, 115)
- HSL: hsl(146, 74%, 50%)
- OKLCH: oklch(0.791 0.204 151.4)
- Relative luminance: 0.538
- Nearest named color: Green Priestess (#11dd55, Δ 3.076) — https://brandsweets.com/colors/green-priestess
- Moods: vivid
- Page: https://brandsweets.com/colors/21de73

## Tints & shades

- Tints (toward white): #37e181, #4ee48f, #5fe79a, #75eaa8, #8ceeb6, #a2f1c4, #b8f4d2, #caf7dd, #e0faeb, #f6fef9
- Shades (toward black): #1ec867, #1bb65e, #18a053, #158e4a, #12783e, #0f6233, #0c5029, #093a1e, #062815, #031209

## Harmonies

- Complementary: #de218c
- Analogous: #2ede21, #21ded1
- Triadic: #7321de, #de7321
- Split-complementary: #d121de, #de212e
- Tetradic: #212ede, #de218c, #ded121

## Colors that go with #21de73

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 MongoDB's brand system and Minecraft's brand system put Blue beside #21de73, as the accent. Seen in: MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Spotify (https://brandsweets.com/colors/brands/spotify), Unity (https://brandsweets.com/colors/brands/unity-com). — https://brandsweets.com/colors/blue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #21de73: 4 real palettes, including 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), Learning App (https://brandsweets.com/palettes/playful#learning-app), Astro (https://brandsweets.com/colors/brands/astro-build). — https://brandsweets.com/colors/deepskyblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #21de73 in 4 real palettes, including MongoDB's brand system and Brilliant's brand system, as the supporting colour. Seen in: MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Brilliant (https://brandsweets.com/colors/brands/brilliant-org), Docker (https://brandsweets.com/colors/brands/docker-com), Khan Academy (https://brandsweets.com/colors/brands/khanacademy-org). — https://brandsweets.com/colors/royalblue
- **Taupe** #483c32 [pool] — Taupe is paired with #21de73 in 9 real palettes, including 7-Eleven's brand system and WhatsApp's brand system, as the lead colour. Seen in: 7-Eleven (https://brandsweets.com/colors/brands/7-eleven-com), WhatsApp (https://brandsweets.com/colors/brands/whatsapp-com), Obsidian (https://brandsweets.com/colors/brands/obsidian-md), Chime (https://brandsweets.com/colors/brands/chime-com). — https://brandsweets.com/colors/taupe
- **Violet** #ee82ee [harmony: complementary] — Violet sits directly opposite #21de73 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
- **Light Coral** #f08080 [harmony, pool: split] — Light Coral is a split-complement of #21de73: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Meadow (https://brandsweets.com/palettes/light#meadow). — https://brandsweets.com/colors/lightcoral
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #21de73: softer than #000 and cool enough to feel like part of the same palette. 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 #21de73 — 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): 1.79:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #148545 (4.7:1); AA: background → #4f4f4f (4.59:1); AAA: text → #0f6635 (7.07:1); AAA: background → #333333 (7.08:1)
- On black (#000000): 11.76:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **CircleCI** — secondary #00db75 (Δ 1.101) — https://brandsweets.com/colors/brands/circleci-com

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/21de73-a2beb1-ce59d4-1f2d2b-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: "#21de73" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.