# #2b4efd

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

## Values

- Hex: `#2b4efd`
- RGB: rgb(43, 78, 253)
- HSL: hsl(230, 98%, 58%)
- OKLCH: oklch(0.528 0.259 266.9)
- Relative luminance: 0.1305
- Nearest named color: C64 Blue (#003aff, Δ 4.559) — https://brandsweets.com/colors/c64-blue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/2b4efd

## Tints & shades

- Tints (toward white): #3f5ffd, #5370fd, #6881fd, #7c91fe, #90a2fe, #a4b3fe, #b8c4fe, #cdd5fe, #e1e6ff, #f5f7ff
- Shades (toward black): #1239fd, #022aed, #0225d4, #0220b6, #021b9d, #011783, #011265, #010d4c, #00082d, #000414

## Harmonies

- Complementary: #fdda2b
- Analogous: #2bb7fd, #712bfd
- Triadic: #fd2b4e, #4efd2b
- Split-complementary: #fd712b, #b7fd2b
- Tetradic: #fd2bb7, #fdda2b, #2bfd71

## Colors that go with #2b4efd

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 #2b4efd: softer than #000 and cool enough to feel like part of the same palette. Seen in: Zoom (https://brandsweets.com/colors/brands/zoom-us), Docker (https://brandsweets.com/colors/brands/docker-com), Campus (https://brandsweets.com/palettes/friendly#campus), HP (https://brandsweets.com/colors/brands/hp-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #2b4efd — 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), Toyota (https://brandsweets.com/colors/brands/toyota-com), Chase (https://brandsweets.com/colors/brands/chase-com), WWE (https://brandsweets.com/colors/brands/wwe-com). — https://brandsweets.com/colors/crimson
- **Amber** #ffbf00 [pool] — Amber is paired with #2b4efd in 6 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), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org). — https://brandsweets.com/colors/amber
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #2b4efd: 12 real palettes, including Nokia's brand system and Nivea's brand system, as the lead colour. Seen in: Nokia (https://brandsweets.com/colors/brands/nokia-com), Nivea (https://brandsweets.com/colors/brands/nivea-com), NHL (https://brandsweets.com/colors/brands/nhl-com), Behance (https://brandsweets.com/colors/brands/behance-net). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #2b4efd: 9 real palettes, including Roblox's brand system and Webflow's brand system, as the supporting colour. Seen in: Roblox (https://brandsweets.com/colors/brands/roblox-com), Webflow (https://brandsweets.com/colors/brands/webflow-com), Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), NBA (https://brandsweets.com/colors/brands/nba-com). — https://brandsweets.com/colors/cornflowerblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #2b4efd: 14 real palettes, including Chase's brand system and Square's brand system, as the lead colour. Seen in: Chase (https://brandsweets.com/colors/brands/chase-com), Square (https://brandsweets.com/colors/brands/squareup-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Dairy Queen (https://brandsweets.com/colors/brands/dairyqueen-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #2b4efd: 8 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 #2b4efd: 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), 3M (https://brandsweets.com/colors/brands/3m-com). — https://brandsweets.com/colors/firebrick

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

- On white (#ffffff): 5.82:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #0d35fd (7.13:1)
- On black (#000000): 3.61:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #4967fd (4.64:1); AA: background → #e3e3e3 (4.53:1); AAA: text → #778dfe (7.03:1)

## Brands using this color

- **Grafana Labs** — primary #1b55f5 (Δ 1.851) — https://brandsweets.com/colors/brands/grafana-com
- **Grafana Labs** — accent #1b55f5 (Δ 1.851) — https://brandsweets.com/colors/brands/grafana-com
- **Coinbase** — primary #0052ff (Δ 1.859) — https://brandsweets.com/colors/brands/coinbase
- **Framer** — primary #0055ff (Δ 1.992) — https://brandsweets.com/colors/brands/framer

## 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/2b4efd-9c9ec4-df814e-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: "#2b4efd" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.