# #1e4bb3

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

## Values

- Hex: `#1e4bb3`
- RGB: rgb(30, 75, 179)
- HSL: hsl(222, 71%, 41%)
- OKLCH: oklch(0.45 0.173 263.4)
- Relative luminance: 0.0856
- Nearest named color: Cobalt Blue (#0047ab, Δ 2.394) — https://brandsweets.com/colors/cobalt
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/1e4bb3

## Tints & shades

- Tints (toward white): #2356cd, #2e62dc, #4875e0, #6289e4, #7c9de9, #92aded, #acc1f1, #c6d4f5, #dce5f9, #f6f8fe
- Shades (toward black): #1b44a1, #193e94, #163783, #132f71, #112a64, #0e2353, #0b1b41, #081430, #060f23, #030711

## Harmonies

- Complementary: #b3861e
- Analogous: #1e95b3, #3c1eb3
- Triadic: #b31e4b, #4bb31e
- Split-complementary: #b33c1e, #95b31e
- Tetradic: #b31e95, #b3861e, #1eb33c

## Colors that go with #1e4bb3

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 #1e4bb3: 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), HP (https://brandsweets.com/colors/brands/hp-com), Campus (https://brandsweets.com/palettes/friendly#campus). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #1e4bb3 — 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 #1e4bb3'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 #1e4bb3 in 6 real palettes, including Warner Bros.'s brand system and Walmart's brand system, as the accent. Seen in: Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Walmart (https://brandsweets.com/colors/brands/walmart-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 8 real palettes, including Tesco's brand system and CVS's brand system put Blue beside #1e4bb3, 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), Zillow (https://brandsweets.com/colors/brands/zillow-com). — https://brandsweets.com/colors/blue
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #1e4bb3: 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 #1e4bb3 in 13 real palettes, including Walgreens's brand system and Chase's brand system, as the lead colour. Seen in: Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Chase (https://brandsweets.com/colors/brands/chase-com), Costco (https://brandsweets.com/colors/brands/costco-com), Behance (https://brandsweets.com/colors/brands/behance-net). — https://brandsweets.com/colors/crimson
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #1e4bb3: 7 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): 7.74:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.71:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #3f6fde (4.54:1); AA: background → #c7c7c7 (4.58:1); AAA: text → #6f93e7 (7:1); AAA: background → #f5f5f5 (7.1:1)

## Brands using this color

- **Airtable** — primary #254fad (Δ 1.591) — https://brandsweets.com/colors/brands/airtable-com
- **Panasonic** — accent #1953b4 (Δ 1.984) — https://brandsweets.com/colors/brands/panasonic-com

## 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/1e4bb3-9ca3c4-df6e4e-211f2d-e9eff1?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: "#1e4bb3" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.