# #ad1a21

A color — warm, vivid, playful, bold. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#ad1a21`
- RGB: rgb(173, 26, 33)
- HSL: hsl(357, 74%, 39%)
- OKLCH: oklch(0.482 0.18 25.6)
- Relative luminance: 0.0973
- Nearest named color: Blood Rush (#aa2222, Δ 0.873) — https://brandsweets.com/colors/blood-rush
- Moods: warm, vivid, playful, bold
- Page: https://brandsweets.com/colors/ad1a21

## Tints & shades

- Tints (toward white): #c81e26, #df262f, #e24048, #e65b62, #ea757b, #ee8c91, #f2a6aa, #f6c1c4, #fadcdd, #fef6f7
- Shades (toward black): #a0181f, #8e151b, #811319, #6f1115, #620f13, #500c0f, #430a0d, #310709, #230507, #120303

## Harmonies

- Complementary: #1aada6
- Analogous: #ad1a6b, #ad5c1a
- Triadic: #21ad1a, #1a21ad
- Split-complementary: #1aad5c, #1a6bad
- Tetradic: #6bad1a, #1aada6, #5c1aad

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

- On white (#ffffff): 7.13:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.95:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #df2a33 (4.52:1); AA: background → #cfcfcf (4.57:1); AAA: text → #ea7177 (7.13:1); AAA: background → #ffffff (7.13:1)

## Brands using this color

- **Twilio** — accent #b10f23 (Δ 1.057) — https://brandsweets.com/colors/brands/twilio-com

## Fonts for this mood

- warm: https://brandsweets.com/fonts/mood/warm
- playful: https://brandsweets.com/fonts/mood/playful
- bold: https://brandsweets.com/fonts/mood/bold

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/ad1a21-c49f9c-62cb93-2d251f-f1e9ed?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: "#ad1a21" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.