# #166bf3

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

## Values

- Hex: `#166bf3`
- RGB: rgb(22, 107, 243)
- HSL: hsl(217, 90%, 52%)
- OKLCH: oklch(0.565 0.218 260.4)
- Relative luminance: 0.1716
- Nearest named color: Bluerocratic (#1f66ff, Δ 2.15) — https://brandsweets.com/colors/bluerocratic
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/166bf3

## Tints & shades

- Tints (toward white): #2f7af4, #4287f5, #5a96f6, #6ea2f7, #86b2f9, #9ec1fa, #b1cefb, #caddfc, #dde9fd, #f5f9fe
- Shades (toward black): #0c5fe4, #0b55cb, #0a4db8, #0842a0, #073888, #062e6f, #052457, #041c44, #02122c, #010813

## Harmonies

- Complementary: #f39e16
- Analogous: #16d9f3, #3016f3
- Triadic: #f3166b, #6bf316
- Split-complementary: #f33016, #d9f316
- Tetradic: #f316d9, #f39e16, #16f330

## Colors that go with #166bf3

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 #166bf3: 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 #166bf3 — 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), Chase (https://brandsweets.com/colors/brands/chase-com), Toyota (https://brandsweets.com/colors/brands/toyota-com). — https://brandsweets.com/colors/crimson
- **Amber** #ffbf00 [pool] — Amber is paired with #166bf3 in 10 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] — 14 real palettes, including MongoDB's brand system and EA's brand system put Blue beside #166bf3, as the accent. Seen in: MongoDB (https://brandsweets.com/colors/brands/mongodb-com), EA (https://brandsweets.com/colors/brands/ea-com), BBC (https://brandsweets.com/colors/brands/bbc-com), Headspace (https://brandsweets.com/colors/brands/headspace-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #166bf3: 13 real palettes, including Behance's brand system and Nokia's brand system, as the supporting colour. Seen in: Behance (https://brandsweets.com/colors/brands/behance-net), Nokia (https://brandsweets.com/colors/brands/nokia-com), Carrefour (https://brandsweets.com/colors/brands/carrefour-com), Nivea (https://brandsweets.com/colors/brands/nivea-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #166bf3: 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 #166bf3: 8 real palettes, including Elastic's brand system and Patreon's brand system, as the supporting colour. Seen in: Elastic (https://brandsweets.com/colors/brands/elastic-co), Patreon (https://brandsweets.com/colors/brands/patreon-com), Calm (https://brandsweets.com/colors/brands/calm-com), Astro (https://brandsweets.com/colors/brands/astro-build). — https://brandsweets.com/colors/deepskyblue
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #166bf3: 6 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), Campbell's (https://brandsweets.com/colors/brands/campbells-com), AT&T (https://brandsweets.com/colors/brands/att-com). — https://brandsweets.com/colors/firebrick

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

- On white (#ffffff): 4.74:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #0a51c2 (7.07:1)
- On black (#000000): 4.43:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #1b6ef3 (4.57:1); AA: background → #fafafa (4.54:1); AAA: text → #5a96f6 (7.13:1)

## Brands using this color

- **Webflow** — primary #146cf4 (Δ 0.27) — https://brandsweets.com/colors/brands/webflow-com
- **GEICO** — secondary #026df1 (Δ 0.685) — https://brandsweets.com/colors/brands/geico-com
- **Ubisoft** — accent #006ef5 (Δ 0.801) — https://brandsweets.com/colors/brands/ubisoft-com
- **MongoDB** — secondary #006cfa (Δ 1.131) — https://brandsweets.com/colors/brands/mongodb-com
- **EA** — accent #0070f3 (Δ 1.182) — https://brandsweets.com/colors/brands/ea-com
- **Vercel** — accent #0070f3 (Δ 1.182) — https://brandsweets.com/colors/brands/vercel
- **Sephora** — secondary #136bea (Δ 1.38) — https://brandsweets.com/colors/brands/sephora-com
- **BBC** — secondary #0071f1 (Δ 1.465) — https://brandsweets.com/colors/brands/bbc-com
- **Rotten Tomatoes** — secondary #326af6 (Δ 1.588) — https://brandsweets.com/colors/brands/rottentomatoes-com
- **Elastic** — accent #0d6efd (Δ 1.629) — https://brandsweets.com/colors/brands/elastic-co
- **Wayfair** — secondary #1364f1 (Δ 1.717) — https://brandsweets.com/colors/brands/wayfair-com
- **Behance** — primary #1769ff (Δ 1.872) — https://brandsweets.com/colors/brands/behance-net
- **Square** — primary #006aff (Δ 1.876) — https://brandsweets.com/colors/brands/squareup-com
- **Square** — accent #006aff (Δ 1.876) — https://brandsweets.com/colors/brands/squareup-com
- **Yahoo** — accent #0f69ff (Δ 1.881) — https://brandsweets.com/colors/brands/yahoo-com
- **Nokia** — secondary #0065ed (Δ 1.929) — https://brandsweets.com/colors/brands/nokia-com
- **Fivetran blue** — primary #346cec (Δ 1.988) — https://brandsweets.com/colors/brands/fivetran-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/166bf3-9ca7c4-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: "#166bf3" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.