# #391fff

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

## Values

- Hex: `#391fff`
- RGB: rgb(57, 31, 255)
- HSL: hsl(247, 100%, 56%)
- OKLCH: oklch(0.483 0.293 271.7)
- Relative luminance: 0.0907
- Nearest named color: Blustering Blue (#4411ff, Δ 1.578) — https://brandsweets.com/colors/blustering-blue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/391fff

## Tints & shades

- Tints (toward white): #4b33ff, #5d47ff, #7361ff, #8575ff, #978aff, #a99eff, #bbb3ff, #d2ccff, #e4e0ff, #f6f5ff
- Shades (toward black): #2205ff, #1b00eb, #1800cc, #1500b3, #120099, #0f0080, #0c0066, #080047, #05002e, #020014

## Harmonies

- Complementary: #e5ff1f
- Analogous: #1f75ff, #a91fff
- Triadic: #ff391f, #1fff39
- Split-complementary: #ffa91f, #75ff1f
- Tetradic: #ff1f75, #e5ff1f, #1fffa9

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

- On white (#ffffff): 7.46:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.81:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #6f5cff (4.65:1); AA: background → #c9c9c9 (4.51:1); AAA: text → #9385ff (7.04:1); AAA: background → #fafafa (7.15:1)

## Brands using this color

- **Warp** — secondary #2a1eff (Δ 1.814) — https://brandsweets.com/colors/brands/warp-dev

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- 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/391fff-a59cc4-dfaa4e-271f2d-e9ecf1?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: "#391fff" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.