# #0a66fa

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

## Values

- Hex: `#0a66fa`
- RGB: rgb(10, 102, 250)
- HSL: hsl(217, 96%, 51%)
- OKLCH: oklch(0.56 0.234 260.9)
- Relative luminance: 0.1647
- Nearest named color: Blue Ribbon (#0066ff, Δ 0.765) — https://brandsweets.com/colors/blue-ribbon
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/0a66fa

## Tints & shades

- Tints (toward white): #2376fb, #3782fb, #5092fb, #69a1fc, #82b1fc, #96bdfd, #afcdfd, #c8ddfe, #dce9fe, #f5f9ff
- Shades (toward black): #055be6, #0453d2, #0449b9, #033fa0, #03378c, #022e73, #02245a, #011a41, #01122d, #000814

## Harmonies

- Complementary: #fa9e0a
- Analogous: #0adefa, #260afa
- Triadic: #fa0a66, #66fa0a
- Split-complementary: #fa260a, #defa0a
- Tetradic: #fa0ade, #fa9e0a, #0afa26

## Colors that go with #0a66fa

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 #0a66fa: 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 #0a66fa — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: WWE (https://brandsweets.com/colors/brands/wwe-com), Behance (https://brandsweets.com/colors/brands/behance-net), 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 #0a66fa in 9 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), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 13 real palettes, including Dropbox's brand system and MongoDB's brand system put Blue beside #0a66fa, as the accent. Seen in: Dropbox (https://brandsweets.com/colors/brands/dropbox-com), MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Headspace (https://brandsweets.com/colors/brands/headspace-com), EA (https://brandsweets.com/colors/brands/ea-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #0a66fa: 13 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 #0a66fa: 6 real palettes, including Webflow's brand system and Roblox's brand system, as the accent. Seen in: Webflow (https://brandsweets.com/colors/brands/webflow-com), Roblox (https://brandsweets.com/colors/brands/roblox-com), NBA (https://brandsweets.com/colors/brands/nba-com), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #0a66fa: 8 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
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #0a66fa: 7 real palettes, including OnePlus's brand system and ASUS's brand system, as the supporting colour. Seen in: OnePlus (https://brandsweets.com/colors/brands/oneplus-com), ASUS (https://brandsweets.com/colors/brands/asus-com), PostHog (https://brandsweets.com/colors/brands/posthog-com), HashiCorp (https://brandsweets.com/colors/brands/hashicorp-com). — https://brandsweets.com/colors/dodgerblue

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

- On white (#ffffff): 4.89:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #044fc8 (7.1:1)
- On black (#000000): 4.29:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #146cfa (4.56:1); AA: background → #f7f7f7 (4.57:1); AAA: text → #5595fc (7.09:1)

## Brands using this color

- **WWE** — accent #0166ff (Δ 0.761) — https://brandsweets.com/colors/brands/wwe-com
- **IBM** — secondary #0f62fe (Δ 1.051) — https://brandsweets.com/colors/brands/ibm-com
- **Yahoo** — accent #0f69ff (Δ 1.068) — https://brandsweets.com/colors/brands/yahoo-com
- **IBM** — accent #0062fe (Δ 1.133) — https://brandsweets.com/colors/brands/ibm-com
- **Square** — primary #006aff (Δ 1.16) — https://brandsweets.com/colors/brands/squareup-com
- **Square** — accent #006aff (Δ 1.16) — https://brandsweets.com/colors/brands/squareup-com
- **Behance** — primary #1769ff (Δ 1.182) — https://brandsweets.com/colors/brands/behance-net
- **Dropbox** — secondary #0061fe (Δ 1.325) — https://brandsweets.com/colors/brands/dropbox-com
- **MongoDB** — secondary #006cfa (Δ 1.355) — https://brandsweets.com/colors/brands/mongodb-com
- **Dropbox** — primary #0061ff (Δ 1.391) — https://brandsweets.com/colors/brands/dropbox-com
- **Wayfair** — secondary #1364f1 (Δ 1.424) — https://brandsweets.com/colors/brands/wayfair-com
- **Nivea** — secondary #0f60ff (Δ 1.493) — https://brandsweets.com/colors/brands/nivea-com
- **Cisco** — secondary #0a60ff (Δ 1.516) — https://brandsweets.com/colors/brands/cisco-com
- **Docker** — secondary #2560ff (Δ 1.65) — https://brandsweets.com/colors/brands/docker-com
- **OnePlus** — accent #2660f5 (Δ 1.656) — https://brandsweets.com/colors/brands/oneplus-com
- **Toyota** — accent #145fff (Δ 1.663) — https://brandsweets.com/colors/brands/toyota-com
- **Webflow** — primary #146cf4 (Δ 1.748) — https://brandsweets.com/colors/brands/webflow-com
- **Elastic** — accent #0d6efd (Δ 1.945) — https://brandsweets.com/colors/brands/elastic-co
- **Spectrum** — accent #005eff (Δ 1.972) — https://brandsweets.com/colors/brands/spectrum-com
- **Ubisoft** — accent #006ef5 (Δ 1.999) — https://brandsweets.com/colors/brands/ubisoft-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/0a66fa-9ca7c4-df624e-201f2d-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: "#0a66fa" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.