# #2b66fd

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

## Values

- Hex: `#2b66fd`
- RGB: rgb(43, 102, 253)
- HSL: hsl(223, 98%, 58%)
- OKLCH: oklch(0.568 0.233 264)
- Relative luminance: 0.1711
- Nearest named color: Bluerocratic (#1f66ff, Δ 0.727) — https://brandsweets.com/colors/bluerocratic
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/2b66fd

## Tints & shades

- Tints (toward white): #3f75fd, #5383fd, #6892fd, #7ca1fe, #90affe, #a4befe, #b8ccfe, #cddbfe, #e1e9ff, #f5f8ff
- Shades (toward black): #1254fd, #0245ed, #023ed4, #0235b6, #022d9d, #012683, #011d65, #01164c, #000d2d, #000614

## Harmonies

- Complementary: #fdc12b
- Analogous: #2bcffd, #582bfd
- Triadic: #fd2b66, #66fd2b
- Split-complementary: #fd582b, #cffd2b
- Tetradic: #fd2bcf, #fdc12b, #2bfd58

## Colors that go with #2b66fd

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 #2b66fd: softer than #000 and cool enough to feel like part of the same palette. Seen in: Docker (https://brandsweets.com/colors/brands/docker-com), Zoom (https://brandsweets.com/colors/brands/zoom-us), Disney (https://brandsweets.com/colors/brands/disney-com), Campus (https://brandsweets.com/palettes/friendly#campus). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #2b66fd — 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), WWE (https://brandsweets.com/colors/brands/wwe-com), Toyota (https://brandsweets.com/colors/brands/toyota-com), Chase (https://brandsweets.com/colors/brands/chase-com). — https://brandsweets.com/colors/crimson
- **Amber** #ffbf00 [pool] — Amber is paired with #2b66fd in 7 real palettes, including Mastodon hosted on mastodon.social's brand system and Walmart's brand system, as the accent. Seen in: Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Walmart (https://brandsweets.com/colors/brands/walmart-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] — 13 real palettes, including MongoDB's brand system and Dropbox's brand system put Blue beside #2b66fd, as the accent. Seen in: MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Dropbox (https://brandsweets.com/colors/brands/dropbox-com), EA (https://brandsweets.com/colors/brands/ea-com), Signal (https://brandsweets.com/colors/brands/signal-org). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #2b66fd: 12 real palettes, including Behance's brand system and Nivea's brand system, as the supporting colour. Seen in: Behance (https://brandsweets.com/colors/brands/behance-net), Nivea (https://brandsweets.com/colors/brands/nivea-com), Nokia (https://brandsweets.com/colors/brands/nokia-com), Carrefour (https://brandsweets.com/colors/brands/carrefour-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #2b66fd: 6 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), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), 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 #2b66fd: 6 real palettes, including Elastic's brand system and Calm's brand system, as the supporting colour. Seen in: Elastic (https://brandsweets.com/colors/brands/elastic-co), Calm (https://brandsweets.com/colors/brands/calm-com), Patreon (https://brandsweets.com/colors/brands/patreon-com), Venmo (https://brandsweets.com/colors/brands/venmo-com). — https://brandsweets.com/colors/deepskyblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #2b66fd: 15 real palettes, including Square's brand system and Fivetran blue's brand system, as the supporting colour. Seen in: Square (https://brandsweets.com/colors/brands/squareup-com), Fivetran blue (https://brandsweets.com/colors/brands/fivetran-com), Chase (https://brandsweets.com/colors/brands/chase-com), Guinness (https://brandsweets.com/colors/brands/guinness-com). — https://brandsweets.com/colors/denim

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

- On white (#ffffff): 4.75:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #0243e8 (7.07:1)
- On black (#000000): 4.42:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #306afd (4.61:1); AA: background → #fafafa (4.55:1); AAA: text → #6892fd (7.12:1)

## Brands using this color

- **Behance** — primary #1769ff (Δ 1.078) — https://brandsweets.com/colors/brands/behance-net
- **Yahoo** — accent #0f69ff (Δ 1.276) — https://brandsweets.com/colors/brands/yahoo-com
- **Docker** — secondary #2560ff (Δ 1.491) — https://brandsweets.com/colors/brands/docker-com
- **Rotten Tomatoes** — secondary #326af6 (Δ 1.537) — https://brandsweets.com/colors/brands/rottentomatoes-com
- **Square** — primary #006aff (Δ 1.597) — https://brandsweets.com/colors/brands/squareup-com
- **Square** — accent #006aff (Δ 1.597) — https://brandsweets.com/colors/brands/squareup-com
- **WWE** — accent #0166ff (Δ 1.597) — https://brandsweets.com/colors/brands/wwe-com
- **IBM** — secondary #0f62fe (Δ 1.778) — https://brandsweets.com/colors/brands/ibm-com
- **MongoDB** — secondary #006cfa (Δ 1.872) — https://brandsweets.com/colors/brands/mongodb-com
- **OnePlus** — accent #2660f5 (Δ 1.932) — https://brandsweets.com/colors/brands/oneplus-com
- **Elastic** — accent #0d6efd (Δ 1.941) — https://brandsweets.com/colors/brands/elastic-co

## 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/2b66fd-9ca3c4-df704e-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: "#2b66fd" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.