# #104fcb

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

## Values

- Hex: `#104fcb`
- RGB: rgb(16, 79, 203)
- HSL: hsl(220, 85%, 43%)
- OKLCH: oklch(0.475 0.202 262.1)
- Relative luminance: 0.1001
- Nearest named color: Denim (#1560bd, Δ 4.936) — https://brandsweets.com/colors/denim
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/104fcb

## Tints & shades

- Tints (toward white): #135ae7, #2668ed, #427cf0, #5a8cf2, #76a0f4, #8eb0f6, #aac4f8, #c2d4fa, #dee8fc, #f6f8fe
- Shades (toward black): #0f47b8, #0d40a5, #0c3992, #0a317f, #092c71, #08255e, #061d4b, #051639, #030f26, #020713

## Harmonies

- Complementary: #cb8d10
- Analogous: #10accb, #3010cb
- Triadic: #cb104f, #4fcb10
- Split-complementary: #cb3010, #accb10
- Tetradic: #cb10ac, #cb8d10, #10cb30

## Colors that go with #104fcb

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 #104fcb: 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 #104fcb — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Behance (https://brandsweets.com/colors/brands/behance-net), Chase (https://brandsweets.com/colors/brands/chase-com), 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 #104fcb'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 #104fcb 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 #104fcb, 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 #104fcb: 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 #104fcb: 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), Elastic (https://brandsweets.com/colors/brands/elastic-co). — https://brandsweets.com/colors/deepskyblue
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #104fcb: 10 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), ASUS (https://brandsweets.com/colors/brands/asus-com). — https://brandsweets.com/colors/dodgerblue

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

- On white (#ffffff): 6.99:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #104dc6 (7.24:1)
- On black (#000000): 3:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #2f6fee (4.63:1); AA: background → #d1d1d1 (4.58:1); AAA: text → #6896f3 (7.25:1)

## Brands using this color

- **Warbyparker** — accent #1050d0 (Δ 0.826) — https://brandsweets.com/colors/brands/warbyparker-com
- **UEFA** — accent #1e4fd0 (Δ 1.108) — https://brandsweets.com/colors/brands/uefa-com
- **Soundcloud** — accent #044dd2 (Δ 1.247) — https://brandsweets.com/colors/brands/soundcloud-com
- **Bank of America** — accent #0053c2 (Δ 1.735) — https://brandsweets.com/colors/brands/bankofamerica-com
- **Purina Pro Plan** — accent #1c49c4 (Δ 1.747) — https://brandsweets.com/colors/brands/chewy-com
- **Etsy** — accent #254ec1 (Δ 1.916) — https://brandsweets.com/colors/brands/etsy-com
- **Coursera** — accent #0056d2 (Δ 1.927) — https://brandsweets.com/colors/brands/coursera-org
- **MLB** — accent #0048c7 (Δ 1.988) — https://brandsweets.com/colors/brands/mlb-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/104fcb-9ca5c4-df694e-211f2d-e9f0f1?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: "#104fcb" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.