# rebeccapurple (#663399)

A CSS color — cool, modern. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#663399`
- RGB: rgb(102, 51, 153)
- HSL: hsl(270, 50%, 40%)
- OKLCH: oklch(0.44 0.16 303.4)
- Relative luminance: 0.0749
- Name: rebeccapurple (`rebeccapurple`, source: css)
- Moods: cool, modern
- Page: https://brandsweets.com/colors/rebeccapurple

## Tints & shades

- Tints (toward white): #753bb0, #8547c2, #915bc8, #a171d0, #b088d7, #bf9fdf, #cfb6e7, #dbc9ed, #ebe0f5, #faf7fc
- Shades (toward black): #5c2e8a, #542a7e, #4a256f, #422163, #381c54, #2e1745, #261339, #1c0e2a, #140a1f, #0a050f

## Harmonies

- Complementary: #669933
- Analogous: #333399, #993399
- Triadic: #996633, #339966
- Split-complementary: #999933, #339933
- Tetradic: #993333, #669933, #339999

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

- On white (#ffffff): 8.41:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.5:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #915bc8 (4.53:1); AA: background → #bfbfbf (4.57:1); AAA: text → #ad85d6 (7.1:1); AAA: background → #ebebeb (7.05:1)

## Fonts for this mood

- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/663399-b59cc4-c9cb62-2c1f2d-eae9f1?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: "#663399" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.