# #1a4fcb

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

## Values

- Hex: `#1a4fcb`
- RGB: rgb(26, 79, 203)
- HSL: hsl(222, 77%, 45%)
- OKLCH: oklch(0.477 0.2 263.3)
- Relative luminance: 0.1012
- Nearest named color: Denim (#1560bd, Δ 4.847) — https://brandsweets.com/colors/denim
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/1a4fcb

## Tints & shades

- Tints (toward white): #1d58e2, #386ce5, #4f7de8, #668eeb, #81a2ef, #97b2f2, #aec3f4, #c4d4f7, #dfe8fb, #f6f8fe
- Shades (toward black): #1848b9, #1641a7, #133a95, #113383, #0f2c71, #0c235a, #091c48, #071536, #050e24, #020712

## Harmonies

- Complementary: #cb961a
- Analogous: #1aa8cb, #3e1acb
- Triadic: #cb1a4f, #4fcb1a
- Split-complementary: #cb3e1a, #a8cb1a
- Tetradic: #cb1aa8, #cb961a, #1acb3e

## Colors that go with #1a4fcb

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 #1a4fcb: softer than #000 and cool enough to feel like part of the same palette. Seen in: UEFA (https://brandsweets.com/colors/brands/uefa-com), Campus (https://brandsweets.com/palettes/friendly#campus), HP (https://brandsweets.com/colors/brands/hp-com), Hasbro (https://brandsweets.com/colors/brands/hasbro-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #1a4fcb — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Chase (https://brandsweets.com/colors/brands/chase-com), Behance (https://brandsweets.com/colors/brands/behance-net), Target : Expect More. Pay Less. (https://brandsweets.com/colors/brands/target-com), Netflix (https://brandsweets.com/colors/brands/netflix). — https://brandsweets.com/colors/crimson
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #1a4fcb'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), Discover (https://brandsweets.com/colors/brands/discover-com), Hershey's (https://brandsweets.com/colors/brands/hersheys-com). — https://brandsweets.com/colors/steelblue
- **Amber** #ffbf00 [pool] — Amber is paired with #1a4fcb in 7 real palettes, including Walmart's brand system and Warner Bros.'s brand system, as the accent. Seen in: Walmart (https://brandsweets.com/colors/brands/walmart-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), NBA (https://brandsweets.com/colors/brands/nba-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 10 real palettes, including Zillow's brand system and Headspace's brand system put Blue beside #1a4fcb, as the lead colour. Seen in: Zillow (https://brandsweets.com/colors/brands/zillow-com), Headspace (https://brandsweets.com/colors/brands/headspace-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), Procter & Gamble (https://brandsweets.com/colors/brands/pg-com). — https://brandsweets.com/colors/blue
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #1a4fcb: 9 real palettes, including Gopro's brand system and Blue Mono, as the supporting colour. Seen in: Gopro (https://brandsweets.com/colors/brands/gopro-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), NBA (https://brandsweets.com/colors/brands/nba-com). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #1a4fcb: 7 real palettes, including Venmo's brand system and Warp's brand system, as the supporting colour. Seen in: Venmo (https://brandsweets.com/colors/brands/venmo-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Kraken (https://brandsweets.com/colors/brands/kraken-com), Calm (https://brandsweets.com/colors/brands/calm-com). — https://brandsweets.com/colors/deepskyblue
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #1a4fcb: 10 real palettes, including Coursera's brand system and HashiCorp's brand system, as the supporting colour. Seen in: Coursera (https://brandsweets.com/colors/brands/coursera-org), HashiCorp (https://brandsweets.com/colors/brands/hashicorp-com), Apple (https://brandsweets.com/colors/brands/apple-com), ASUS (https://brandsweets.com/colors/brands/asus-com). — https://brandsweets.com/colors/dodgerblue

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

- On white (#ffffff): 6.94:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #1a4ec7 (7.1:1)
- On black (#000000): 3.02:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #3d70e6 (4.66:1); AA: background → #d1d1d1 (4.55:1); AAA: text → #6f94ec (7.12:1)

## Brands using this color

- **UEFA** — accent #1e4fd0 (Δ 0.837) — https://brandsweets.com/colors/brands/uefa-com
- **Warbyparker** — accent #1050d0 (Δ 0.887) — https://brandsweets.com/colors/brands/warbyparker-com
- **Soundcloud** — accent #044dd2 (Δ 1.487) — https://brandsweets.com/colors/brands/soundcloud-com
- **Etsy** — accent #254ec1 (Δ 1.692) — https://brandsweets.com/colors/brands/etsy-com
- **Purina Pro Plan** — accent #1c49c4 (Δ 1.773) — https://brandsweets.com/colors/brands/chewy-com
- **Bank of America** — accent #0053c2 (Δ 1.889) — https://brandsweets.com/colors/brands/bankofamerica-com
- **Coursera** — accent #0056d2 (Δ 1.958) — https://brandsweets.com/colors/brands/coursera-org

## 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/1a4fcb-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: "#1a4fcb" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.