# #2b3878

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

## Values

- Hex: `#2b3878`
- RGB: rgb(43, 56, 120)
- HSL: hsl(230, 47%, 32%)
- OKLCH: oklch(0.367 0.11 271.4)
- Relative luminance: 0.047
- Nearest named color: Evening Magic (#363e7d, Δ 2.562) — https://brandsweets.com/colors/evening-magic
- Moods: cool, modern
- Page: https://brandsweets.com/colors/2b3878

## Tints & shades

- Tints (toward white): #354492, #3d4fa9, #4b5ebe, #6272c6, #7c8ad0, #96a1d9, #adb5e1, #c7cdeb, #dde1f3, #f8f8fc
- Shades (toward black): #27336d, #232e61, #202a5a, #1c254f, #182043, #141a38, #10152d, #0e1225, #090c1a, #05070f

## Harmonies

- Complementary: #786b2b
- Analogous: #2b5e78, #452b78
- Triadic: #782b38, #38782b
- Split-complementary: #78452b, #5e782b
- Tetradic: #782b5e, #786b2b, #2b7845

## Colors that go with #2b3878

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 #2b3878's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Glacier (https://brandsweets.com/palettes/cool#glacier), Plaid (https://brandsweets.com/colors/brands/plaid-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Hershey's (https://brandsweets.com/colors/brands/hersheys-com). — https://brandsweets.com/colors/steelblue
- **Blue** #0000ff [pool] — 6 real palettes, including Alaska Airlines's brand system and CVS's brand system put Blue beside #2b3878, as the accent. Seen in: Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Procter & Gamble (https://brandsweets.com/colors/brands/pg-com), Tesco (https://brandsweets.com/colors/brands/tesco-com). — https://brandsweets.com/colors/blue
- **Crimson** #dc143c [pool] — Crimson is paired with #2b3878 in 8 real palettes, including Casper Sleep's brand system and Marvel's brand system, as the lead colour. Seen in: Casper Sleep (https://brandsweets.com/colors/brands/casper-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), Nintendo (https://brandsweets.com/colors/brands/nintendo-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #2b3878: 19 real palettes, including Hasbro's brand system and Panasonic's brand system, as the supporting colour. Seen in: Hasbro (https://brandsweets.com/colors/brands/hasbro-com), Panasonic (https://brandsweets.com/colors/brands/panasonic-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/denim
- **Light Sea Green** #20b2aa [pool] — Light Sea Green shows up next to #2b3878 in 4 real palettes, including Confluent's brand system and Taco Bell's brand system, as the accent. Seen in: Confluent (https://brandsweets.com/colors/brands/confluent-io), Taco Bell (https://brandsweets.com/colors/brands/tacobell-com), Lido (https://brandsweets.com/palettes/vivid#lido), Lagoon (https://brandsweets.com/palettes/vivid#lagoon). — https://brandsweets.com/colors/lightseagreen
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #2b3878 in 5 real palettes, including NASA's brand system and Tide's brand system, as the supporting colour. Seen in: NASA (https://brandsweets.com/colors/brands/nasa-gov), Tide (https://brandsweets.com/colors/brands/tide-com), Tumblr (https://brandsweets.com/colors/brands/tumblr-com), Audi (https://brandsweets.com/colors/brands/audi-com). — https://brandsweets.com/colors/orangered
- **Powder Blue** #b0e0e6 [pool] — Designers have shipped Powder Blue with #2b3878: 5 real palettes, including Glacier and First Snow, as the supporting colour. Seen in: Glacier (https://brandsweets.com/palettes/cool#glacier), First Snow (https://brandsweets.com/palettes/cool#first-snow), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Macaron (https://brandsweets.com/palettes/light#macaron). — https://brandsweets.com/colors/powderblue
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #2b3878: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy. — https://brandsweets.com/colors/whitesmoke

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

- On white (#ffffff): 10.83:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.94:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #5e6fc5 (4.56:1); AA: background → #a8a8a8 (4.55:1); AAA: text → #8794d4 (7.22:1); AAA: background → #d1d1d1 (7.09:1)

## 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/2b3878-9c9ec4-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: "#2b3878" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.