# #21f225

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

## Values

- Hex: `#21f225`
- RGB: rgb(33, 242, 37)
- HSL: hsl(121, 89%, 54%)
- OKLCH: oklch(0.835 0.274 142.7)
- Relative luminance: 0.6396
- Nearest named color: Becquerel (#4bec13, Δ 1.816) — https://brandsweets.com/colors/becquerel
- Moods: vivid
- Page: https://brandsweets.com/colors/21f225

## Tints & shades

- Tints (toward white): #35f338, #4df54f, #60f662, #78f77a, #8bf88d, #9ff9a0, #b7fbb8, #cafccb, #e2fde3, #f5fef6
- Shades (toward black): #0eec11, #0cd410, #0bbc0e, #0aa40c, #088c0a, #077409, #055c07, #044305, #032b03, #011301

## Harmonies

- Complementary: #f221ef
- Analogous: #86f221, #21f28d
- Triadic: #2521f2, #f22521
- Split-complementary: #8d21f2, #f22186
- Tetradic: #2186f2, #f221ef, #f28d21

## Colors that go with #21f225

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 #21f225 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
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #21f225: 3 real palettes, including Remix's brand system and Learning App, as the lead colour. Seen in: Remix (https://brandsweets.com/colors/brands/remix-run), Learning App (https://brandsweets.com/palettes/playful#learning-app), Prime Video (https://brandsweets.com/colors/brands/primevideo-com). — https://brandsweets.com/colors/deepskyblue
- **Hot Pink** #ff69b4 [harmony: split] — Hot Pink is a split-complement of #21f225: 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 #21f225: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/plum
- **Charcoal** #36454f [role] — Charcoal is the body-text near-black for #21f225: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. — https://brandsweets.com/colors/charcoal
- **Red** #ff0000 [pool] — Red is paired with #21f225 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
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #21f225 in two real palettes: 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). — https://brandsweets.com/colors/royalblue
- **Salmon** #fa8072 [harmony: triadic] — Salmon completes a triad with #21f225 — 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): 1.52:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #08870a (4.69:1); AA: background → #595959 (4.6:1); AAA: text → #066507 (7.31:1); AAA: background → #3d3d3d (7.13:1)
- On black (#000000): 13.79:1 — 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/21f225-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: "#21f225" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.