# #2b4ee9

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

## Values

- Hex: `#2b4ee9`
- RGB: rgb(43, 78, 233)
- HSL: hsl(229, 81%, 54%)
- OKLCH: oklch(0.508 0.235 266.9)
- Relative luminance: 0.1185
- Nearest named color: C64 Blue (#003aff, Δ 5.421) — https://brandsweets.com/colors/c64-blue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/2b4ee9

## Tints & shades

- Tints (toward white): #3d5deb, #5470ed, #6780ef, #7e93f1, #90a2f3, #a3b2f5, #bac5f8, #ccd5fa, #e3e8fc, #f6f7fe
- Shades (toward black): #183de2, #1537cb, #1330b4, #102a9d, #0e2486, #0c1e6f, #091858, #071141, #040b2a, #020512

## Harmonies

- Complementary: #e9c62b
- Analogous: #2bade9, #672be9
- Triadic: #e92b4e, #4ee92b
- Split-complementary: #e9672b, #ade92b
- Tetradic: #e92bad, #e9c62b, #2be967

## Colors that go with #2b4ee9

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 #2b4ee9: softer than #000 and cool enough to feel like part of the same palette. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), HP (https://brandsweets.com/colors/brands/hp-com), UEFA (https://brandsweets.com/colors/brands/uefa-com), Zoom (https://brandsweets.com/colors/brands/zoom-us). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #2b4ee9 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Coinbase (https://brandsweets.com/colors/brands/coinbase), Chase (https://brandsweets.com/colors/brands/chase-com), Toyota (https://brandsweets.com/colors/brands/toyota-com), WWE (https://brandsweets.com/colors/brands/wwe-com). — https://brandsweets.com/colors/crimson
- **Amber** #ffbf00 [pool] — Amber is paired with #2b4ee9 in 7 real palettes, including Walmart's brand system and NBA's brand system, as the accent. Seen in: Walmart (https://brandsweets.com/colors/brands/walmart-com), NBA (https://brandsweets.com/colors/brands/nba-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com). — https://brandsweets.com/colors/amber
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #2b4ee9: 12 real palettes, including NHL's brand system and Oreo's brand system, as the accent. Seen in: NHL (https://brandsweets.com/colors/brands/nhl-com), Oreo (https://brandsweets.com/colors/brands/oreo-com), Zillow (https://brandsweets.com/colors/brands/zillow-com), Warbyparker (https://brandsweets.com/colors/brands/warbyparker-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #2b4ee9: 10 real palettes, including Roblox's brand system and Qualcomm's brand system, as the supporting colour. Seen in: Roblox (https://brandsweets.com/colors/brands/roblox-com), Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), NBA (https://brandsweets.com/colors/brands/nba-com), Webflow (https://brandsweets.com/colors/brands/webflow-com). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #2b4ee9: 6 real palettes, including Warp's brand system and Elastic's brand system, as the lead colour. Seen in: Warp (https://brandsweets.com/colors/brands/warp-dev), Elastic (https://brandsweets.com/colors/brands/elastic-co), Calm (https://brandsweets.com/colors/brands/calm-com), Kraken (https://brandsweets.com/colors/brands/kraken-com). — https://brandsweets.com/colors/deepskyblue
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #2b4ee9: 11 real palettes, including OnePlus's brand system and Coursera's brand system, as the supporting colour. Seen in: OnePlus (https://brandsweets.com/colors/brands/oneplus-com), Coursera (https://brandsweets.com/colors/brands/coursera-org), HashiCorp (https://brandsweets.com/colors/brands/hashicorp-com), ASUS (https://brandsweets.com/colors/brands/asus-com). — https://brandsweets.com/colors/dodgerblue
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #2b4ee9: 5 real palettes, including Bose's brand system and Nissan's brand system, as the accent. Seen in: Bose (https://brandsweets.com/colors/brands/bose-com), Nissan (https://brandsweets.com/colors/brands/nissanusa-com), MLB (https://brandsweets.com/colors/brands/mlb-com), Campbell's (https://brandsweets.com/colors/brands/campbells-com). — https://brandsweets.com/colors/firebrick

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

- On white (#ffffff): 6.23:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #1d42e7 (7.03:1)
- On black (#000000): 3.37:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #4b69ec (4.53:1); AA: background → #dbdbdb (4.5:1); AAA: text → #798ff1 (7.01:1)

## 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/2b4ee9-9c9fc4-df7e4e-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: "#2b4ee9" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.