# #2183ca

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

## Values

- Hex: `#2183ca`
- RGB: rgb(33, 131, 202)
- HSL: hsl(205, 72%, 46%)
- OKLCH: oklch(0.591 0.138 246)
- Relative luminance: 0.2082
- Nearest named color: Haddock’s Sweater (#277aba, Δ 3.159) — https://brandsweets.com/colors/haddocks-sweater
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/2183ca

## Tints & shades

- Tints (toward white): #2891dc, #3e9ce0, #58aae4, #6eb5e7, #84c0eb, #9acbef, #b0d7f2, #cae4f6, #e0effa, #f6fbfe
- Shades (toward black): #1e78b8, #1b6da7, #185e91, #15537f, #12476e, #0f3c5c, #0c314b, #092235, #061723, #030b12

## Harmonies

- Complementary: #ca6721
- Analogous: #21cabc, #212fca
- Triadic: #ca2183, #83ca21
- Split-complementary: #ca212f, #cabc21
- Tetradic: #bc21ca, #ca6721, #2fca21

## Colors that go with #2183ca

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 #2183ca: softer than #000 and cool enough to feel like part of the same palette. Seen in: Auth0 (https://brandsweets.com/colors/brands/auth0-com), Disney (https://brandsweets.com/colors/brands/disney-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #2183ca — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: NASCAR (https://brandsweets.com/colors/brands/nascar-com), State Farm (https://brandsweets.com/colors/brands/statefarm-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), Wendy's (https://brandsweets.com/colors/brands/wendys-com). — https://brandsweets.com/colors/crimson
- **Copper** #b87333 [harmony, pool: complementary] — Copper sits directly opposite #2183ca on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Notion (https://brandsweets.com/colors/brands/notion). — https://brandsweets.com/colors/copper
- **Amber** #ffbf00 [pool] — Amber is paired with #2183ca in 10 real palettes, including Wired's brand system and Beach Hut, as the accent. Seen in: Wired (https://brandsweets.com/colors/brands/wired-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Walmart (https://brandsweets.com/colors/brands/walmart-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 12 real palettes, including Readymag's brand system and Qualcomm's brand system put Blue beside #2183ca, as the supporting colour. Seen in: Readymag (https://brandsweets.com/colors/brands/readymag-com), Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), BBC (https://brandsweets.com/colors/brands/bbc-com), Unity (https://brandsweets.com/colors/brands/unity-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #2183ca: 9 real palettes, including Hershey's's brand system and Glacier, as the supporting colour. Seen in: Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Glacier (https://brandsweets.com/palettes/cool#glacier), General Mills (https://brandsweets.com/colors/brands/generalmills-com), Intel (https://brandsweets.com/colors/brands/intel-com). — https://brandsweets.com/colors/cobalt
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #2183ca: 8 real palettes, including Telegram's brand system and Astro's brand system, as the lead colour. Seen in: Telegram (https://brandsweets.com/colors/brands/telegram-org), Astro (https://brandsweets.com/colors/brands/astro-build), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Patreon (https://brandsweets.com/colors/brands/patreon-com). — https://brandsweets.com/colors/deepskyblue
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #2183ca: 5 real palettes, including Honda's brand system and AT&T's brand system, as the supporting colour. Seen in: Honda (https://brandsweets.com/colors/brands/honda-com), AT&T (https://brandsweets.com/colors/brands/att-com), Wendy's (https://brandsweets.com/colors/brands/wendys-com), Campbell's (https://brandsweets.com/colors/brands/campbells-com). — https://brandsweets.com/colors/firebrick

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

- On white (#ffffff): 4.07:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #1f7bbd (4.54:1); AA: background → #141414 (4.53:1); AAA: text → #175b8c (7.21:1)
- On black (#000000): 5.16:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #3e9ce0 (7.04:1)

## Brands using this color

- **Olympics** — primary #0081c8 (Δ 1.188) — https://brandsweets.com/colors/brands/olympics-com
- **Telegram** — accent #0088cc (Δ 1.435) — https://brandsweets.com/colors/brands/telegram-org
- **Substack** — secondary #0083d5 (Δ 1.816) — https://brandsweets.com/colors/brands/substack-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/2183ca-9cafc4-df4e58-1f212d-e9f1f0?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: "#2183ca" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.