# #21837f

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

## Values

- Hex: `#21837f`
- RGB: rgb(33, 131, 127)
- HSL: hsl(178, 60%, 32%)
- OKLCH: oklch(0.555 0.087 190.9)
- Relative luminance: 0.1809
- Nearest named color: Emerald Whispers (#2b8478, Δ 1.288) — https://brandsweets.com/colors/emerald-whispers
- Moods: vivid
- Page: https://brandsweets.com/colors/21837f

## Tints & shades

- Tints (toward white): #289f9b, #2eb8b3, #3bcec9, #54d4d0, #70dbd8, #8de2e0, #a5e9e6, #c2f0ee, #daf6f5, #f7fdfd
- Shades (toward black): #1e7673, #1b6a67, #18625f, #155654, #124948, #0f3d3c, #0c3130, #0a2928, #071d1c, #041010

## Harmonies

- Complementary: #832124
- Analogous: #21834e, #215583
- Triadic: #7f2183, #837f21
- Split-complementary: #832155, #834e21
- Tetradic: #4e2183, #832124, #558321

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

- On white (#ffffff): 4.55:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #18625f (7.12:1)
- On black (#000000): 4.62:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #2aa7a3 (7.15:1)

## Brands using this color

- **N26** — secondary #088177 (Δ 1.655) — https://brandsweets.com/colors/brands/n26-com

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/21837f-a2bcbe-d45999-1f282d-e9f1ed?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: "#21837f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.