# #1f349e

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

## Values

- Hex: `#1f349e`
- RGB: rgb(31, 52, 158)
- HSL: hsl(230, 67%, 37%)
- OKLCH: oklch(0.386 0.172 268)
- Relative luminance: 0.0522
- Nearest named color: Depths of Night (#2c319b, Δ 1.609) — https://brandsweets.com/colors/depths-of-night
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/1f349e

## Tints & shades

- Tints (toward white): #243db7, #2945d1, #3f59d9, #596fde, #7789e4, #909fe9, #aab5ee, #c3cbf3, #dde1f8, #f6f8fd
- Shades (toward black): #1d3091, #192a80, #172673, #142266, #121e59, #0e1848, #0c143c, #09102f, #060a1e, #030611

## Harmonies

- Complementary: #9e881f
- Analogous: #1f739e, #491f9e
- Triadic: #9e1f34, #349e1f
- Split-complementary: #9e491f, #739e1f
- Tetradic: #9e1f73, #9e881f, #1f9e49

## Colors that go with #1f349e

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 #1f349e: 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), UEFA (https://brandsweets.com/colors/brands/uefa-com), HP (https://brandsweets.com/colors/brands/hp-com). — https://brandsweets.com/colors/charcoal
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #1f349e's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Glacier (https://brandsweets.com/palettes/cool#glacier), FedEx (https://brandsweets.com/colors/brands/fedex-com). — https://brandsweets.com/colors/steelblue
- **Blue** #0000ff [pool] — 6 real palettes, including Procter & Gamble's brand system and CVS's brand system put Blue beside #1f349e, as the supporting colour. Seen in: Procter & Gamble (https://brandsweets.com/colors/brands/pg-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), Pfizer (https://brandsweets.com/colors/brands/pfizer-com). — https://brandsweets.com/colors/blue
- **Crimson** #dc143c [pool] — Crimson is paired with #1f349e in 10 real palettes, including Walgreens's brand system and Pepsi's brand system, as the lead colour. Seen in: Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Pepsi (https://brandsweets.com/colors/brands/pepsi-com), Behance (https://brandsweets.com/colors/brands/behance-net), Casper Sleep (https://brandsweets.com/colors/brands/casper-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #1f349e: 10 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), Intel (https://brandsweets.com/colors/brands/intel-com). — https://brandsweets.com/colors/denim
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #1f349e: 4 real palettes, including 3M's brand system and MLB's brand system, as the supporting colour. Seen in: 3M (https://brandsweets.com/colors/brands/3m-com), MLB (https://brandsweets.com/colors/brands/mlb-com), Nintendo (https://brandsweets.com/colors/brands/nintendo-com), Datadog (https://brandsweets.com/colors/brands/datadoghq-com). — https://brandsweets.com/colors/firebrick
- **Midnight Blue** #191970 [pool] — 14 real palettes, including Fintech Trust and Blue Mono put Midnight Blue beside #1f349e, 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), Air France (https://brandsweets.com/colors/brands/airfrance-com), MLB (https://brandsweets.com/colors/brands/mlb-com). — https://brandsweets.com/colors/midnightblue
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #1f349e in 4 real palettes, including Tide's brand system and NASA's brand system, as the accent. Seen in: Tide (https://brandsweets.com/colors/brands/tide-com), NASA (https://brandsweets.com/colors/brands/nasa-gov), Intercom (https://brandsweets.com/colors/brands/intercom-com), Soundcloud (https://brandsweets.com/colors/brands/soundcloud-com). — https://brandsweets.com/colors/orangered

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

- On white (#ffffff): 10.28:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.04:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #556bdd (4.53:1); AA: background → #adadad (4.58:1); AAA: text → #7f90e6 (7.03:1); AAA: background → #d6d6d6 (7.07:1)

## 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/1f349e-9c9ec4-df814e-231f2d-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: "#1f349e" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.