# #0b3ecb

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

## Values

- Hex: `#0b3ecb`
- RGB: rgb(11, 62, 203)
- HSL: hsl(224, 90%, 42%)
- OKLCH: oklch(0.444 0.222 263.9)
- Relative luminance: 0.0783
- Nearest named color: Lapis on Neptune (#1f22d2, Δ 4.194) — https://brandsweets.com/colors/lapis-on-neptune
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/0b3ecb

## Tints & shades

- Tints (toward white): #0c47e9, #1b55f3, #386bf5, #517df6, #6e92f7, #8ba8f9, #a3bafa, #c0d0fc, #d8e2fd, #f5f8fe
- Shades (toward black): #0a38b8, #0932a5, #082e96, #072883, #06226f, #051c5c, #041649, #03123a, #020c27, #010613

## Harmonies

- Complementary: #cb980b
- Analogous: #0b9fcb, #380bcb
- Triadic: #cb0b3e, #3ecb0b
- Split-complementary: #cb380b, #9fcb0b
- Tetradic: #cb0b9f, #cb980b, #0bcb38

## Colors that go with #0b3ecb

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 #0b3ecb: softer than #000 and cool enough to feel like part of the same palette. Seen in: HP (https://brandsweets.com/colors/brands/hp-com), UEFA (https://brandsweets.com/colors/brands/uefa-com), Campus (https://brandsweets.com/palettes/friendly#campus), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #0b3ecb — 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), Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com). — https://brandsweets.com/colors/crimson
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #0b3ecb'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), 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). — https://brandsweets.com/colors/steelblue
- **Amber** #ffbf00 [pool] — Amber is paired with #0b3ecb in 5 real palettes, including Walmart's brand system and Binance's brand system, as the accent. Seen in: Walmart (https://brandsweets.com/colors/brands/walmart-com), Binance (https://brandsweets.com/colors/brands/binance-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), NBA (https://brandsweets.com/colors/brands/nba-com). — https://brandsweets.com/colors/amber
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #0b3ecb: 8 real palettes, including Blue Mono and Qualcomm's brand system, as the supporting colour. Seen in: Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Gopro (https://brandsweets.com/colors/brands/gopro-com), Canva (https://brandsweets.com/colors/brands/canva-com). — https://brandsweets.com/colors/cornflowerblue
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #0b3ecb: 10 real palettes, including Coursera's brand system and Cargo's brand system, as the supporting colour. Seen in: Coursera (https://brandsweets.com/colors/brands/coursera-org), Cargo (https://brandsweets.com/colors/brands/cargo-site), Readymag (https://brandsweets.com/colors/brands/readymag-com), Samsung (https://brandsweets.com/colors/brands/samsung-com). — https://brandsweets.com/colors/dodgerblue
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #0b3ecb: 5 real palettes, including MLB's brand system and 3M's brand system, as the supporting colour. Seen in: MLB (https://brandsweets.com/colors/brands/mlb-com), 3M (https://brandsweets.com/colors/brands/3m-com), Nissan (https://brandsweets.com/colors/brands/nissanusa-com), Campbell's (https://brandsweets.com/colors/brands/campbells-com). — https://brandsweets.com/colors/firebrick
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #0b3ecb in 7 real palettes, including Spotify's brand system and Indigo SaaS, as the lead colour. Seen in: Spotify (https://brandsweets.com/colors/brands/spotify), Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Unity (https://brandsweets.com/colors/brands/unity-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/mediumseagreen

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

- On white (#ffffff): 8.19:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.57:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #386bf5 (4.59:1); AA: background → #c2c2c2 (4.6:1); AAA: text → #6e92f7 (7.12:1); AAA: background → #f0f0f0 (7.18:1)

## Brands using this color

- **Behance** — secondary #003ecb (Δ 0.39) — https://brandsweets.com/colors/brands/behance-net
- **Oreo** — secondary #0040c3 (Δ 1.342) — https://brandsweets.com/colors/brands/oreo-com
- **Intel** — primary #0046c8 (Δ 1.641) — https://brandsweets.com/colors/brands/intel-com
- **Unilever** — primary #1f36c7 (Δ 1.795) — https://brandsweets.com/colors/brands/unilever-com
- **Zillow** — secondary #0444d4 (Δ 1.938) — https://brandsweets.com/colors/brands/zillow-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/0b3ecb-9ca2c4-df724e-221f2d-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: "#0b3ecb" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.