# #3947ac

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

## Values

- Hex: `#3947ac`
- RGB: rgb(57, 71, 172)
- HSL: hsl(233, 50%, 45%)
- OKLCH: oklch(0.448 0.161 272.2)
- Relative luminance: 0.0835
- Nearest named color: Blasphemous Blue (#3356aa, Δ 3.834) — https://brandsweets.com/colors/blasphemous-blue
- Moods: cool, modern
- Page: https://brandsweets.com/colors/3947ac

## Tints & shades

- Tints (toward white): #404fbf, #5764c7, #6a75cd, #7d87d4, #949cdb, #a7aee2, #bac0e8, #cdd1ee, #e4e6f6, #f7f8fc
- Shades (toward black): #34409d, #2f3a8e, #2a347e, #252e6f, #202760, #1a1f4d, #14193d, #0f132e, #0a0d1f, #05060f

## Harmonies

- Complementary: #ac9f39
- Analogous: #3980ac, #6539ac
- Triadic: #ac3947, #47ac39
- Split-complementary: #ac6539, #80ac39
- Tetradic: #ac3980, #ac9f39, #39ac65

## Colors that go with #3947ac

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

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #3947ac: softer than #000 and cool enough to feel like part of the same palette. Seen in: UEFA (https://brandsweets.com/colors/brands/uefa-com), Hasbro (https://brandsweets.com/colors/brands/hasbro-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #3947ac — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Intel (https://brandsweets.com/colors/brands/intel-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Netflix (https://brandsweets.com/colors/brands/netflix), Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com). — https://brandsweets.com/colors/seagreen
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #3947ac's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: American Express (https://brandsweets.com/colors/brands/americanexpress-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Glacier (https://brandsweets.com/palettes/cool#glacier), Hershey's (https://brandsweets.com/colors/brands/hersheys-com). — https://brandsweets.com/colors/steelblue
- **Amber** #ffbf00 [pool] — Amber is paired with #3947ac in 5 real palettes, including Warner Bros.'s brand system and Wikipedia's brand system, as the accent. Seen in: Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Walmart (https://brandsweets.com/colors/brands/walmart-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 7 real palettes, including Tesco's brand system and CVS's brand system put Blue beside #3947ac, as the supporting colour. Seen in: Tesco (https://brandsweets.com/colors/brands/tesco-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Procter & Gamble (https://brandsweets.com/colors/brands/pg-com), Pixar (https://brandsweets.com/colors/brands/pixar-com). — https://brandsweets.com/colors/blue
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #3947ac: 5 real palettes, including Blue Mono and Gopro's brand system, as the supporting colour. Seen in: Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Gopro (https://brandsweets.com/colors/brands/gopro-com), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), NBA (https://brandsweets.com/colors/brands/nba-com). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #3947ac in 13 real palettes, including Walgreens's brand system and Wells Fargo's brand system, as the lead colour. Seen in: Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Chase (https://brandsweets.com/colors/brands/chase-com), Costco (https://brandsweets.com/colors/brands/costco-com). — https://brandsweets.com/colors/crimson
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #3947ac: 5 real palettes, including Coursera's brand system and Apple's brand system, as the supporting colour. Seen in: Coursera (https://brandsweets.com/colors/brands/coursera-org), Apple (https://brandsweets.com/colors/brands/apple-com), HashiCorp (https://brandsweets.com/colors/brands/hashicorp-com), Venmo (https://brandsweets.com/colors/brands/venmo-com). — https://brandsweets.com/colors/dodgerblue

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

- On white (#ffffff): 7.86:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.67:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #626ecb (4.61:1); AA: background → #c4c4c4 (4.51:1); AAA: text → #8892d7 (7.14:1); AAA: background → #f2f2f2 (7.02:1)

## 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/3947ac-9c9cc4-df884e-241f2d-e9eef1?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: "#3947ac" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.