# #3d3091

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

## Values

- Hex: `#3d3091`
- RGB: rgb(61, 48, 145)
- HSL: hsl(248, 50%, 38%)
- OKLCH: oklch(0.386 0.153 282.7)
- Relative luminance: 0.0515
- Nearest named color: Bluebell (#333399, Δ 2.11) — https://brandsweets.com/colors/bluebell
- Moods: cool, modern
- Page: https://brandsweets.com/colors/3d3091

## Tints & shades

- Tints (toward white): #4738a8, #5140bf, #6657c7, #7b6ecf, #8f85d6, #a49cde, #b9b3e6, #cec9ed, #e3e0f5, #f8f7fc
- Shades (toward black): #392d86, #322877, #2d246b, #271f5c, #221b50, #1d1745, #171236, #120e2a, #0b091b, #06050f

## Harmonies

- Complementary: #849130
- Analogous: #305491, #6e3091
- Triadic: #913d30, #30913d
- Split-complementary: #916e30, #549130
- Tetradic: #913054, #849130, #30916e

## Colors that go with #3d3091

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #3d3091's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: FedEx (https://brandsweets.com/colors/brands/fedex-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Glacier (https://brandsweets.com/palettes/cool#glacier). — https://brandsweets.com/colors/steelblue
- **Blue** #0000ff [pool] — 5 real palettes, including Procter & Gamble's brand system and CVS's brand system put Blue beside #3d3091, as the supporting colour. Seen in: Procter & Gamble (https://brandsweets.com/colors/brands/pg-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Zillow (https://brandsweets.com/colors/brands/zillow-com), Tesco (https://brandsweets.com/colors/brands/tesco-com). — https://brandsweets.com/colors/blue
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #3d3091: softer than #000 and cool enough to feel like part of the same palette. Seen in: dbt Labs (https://brandsweets.com/colors/brands/getdbt-com), Boeing (https://brandsweets.com/colors/brands/boeing-com), Tumblr (https://brandsweets.com/colors/brands/tumblr-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [pool] — Crimson is paired with #3d3091 in 9 real palettes, including Walgreens's brand system and Casper Sleep's brand system, as the lead colour. Seen in: Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Casper Sleep (https://brandsweets.com/colors/brands/casper-com), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Marvel (https://brandsweets.com/colors/brands/marvel-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #3d3091: 12 real palettes, including Warbyparker's brand system and Unilever's brand system, as the accent. Seen in: Warbyparker (https://brandsweets.com/colors/brands/warbyparker-com), Unilever (https://brandsweets.com/colors/brands/unilever-com), General Mills (https://brandsweets.com/colors/brands/generalmills-com), Hasbro (https://brandsweets.com/colors/brands/hasbro-com). — https://brandsweets.com/colors/denim
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #3d3091: 4 real palettes, including Datadog's brand system and Nintendo's brand system, as the accent. Seen in: Datadog (https://brandsweets.com/colors/brands/datadoghq-com), Nintendo (https://brandsweets.com/colors/brands/nintendo-com), MLB (https://brandsweets.com/colors/brands/mlb-com), 3M (https://brandsweets.com/colors/brands/3m-com). — https://brandsweets.com/colors/firebrick
- **Midnight Blue** #191970 [pool] — 13 real palettes, including Fintech Trust and Blue Mono put Midnight Blue beside #3d3091, as that palette's text colour. Seen in: Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Gillette (https://brandsweets.com/colors/brands/gillette-com), First Snow (https://brandsweets.com/palettes/cool#first-snow). — https://brandsweets.com/colors/midnightblue
- **Red** #ff0000 [pool] — Red is paired with #3d3091 in 4 real palettes, including Walgreens's brand system and Twitch's brand system, as the supporting colour. Seen in: Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Twitch (https://brandsweets.com/colors/brands/twitch-tv), 3M (https://brandsweets.com/colors/brands/3m-com), Hyundai (https://brandsweets.com/colors/brands/hyundaiusa-com). — https://brandsweets.com/colors/red

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

- On white (#ffffff): 10.34:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.03:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #7466cc (4.52:1); AA: background → #ababab (4.5:1); AAA: text → #968cd9 (7.05:1); AAA: background → #d6d6d6 (7.12:1)

## 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/3d3091-a69cc4-dfac4e-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: "#3d3091" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.