# #257dbb

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

## Values

- Hex: `#257dbb`
- RGB: rgb(37, 125, 187)
- HSL: hsl(205, 67%, 44%)
- OKLCH: oklch(0.569 0.125 244.5)
- Relative luminance: 0.1865
- Nearest named color: Haddock’s Sweater (#277aba, Δ 0.83) — https://brandsweets.com/colors/haddocks-sweater
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/257dbb

## Tints & shades

- Tints (toward white): #298bd1, #3f99d9, #55a4dd, #6eb2e2, #84bde7, #99c9eb, #b2d6f0, #c8e2f4, #e1eff9, #f6fafd
- Shades (toward black): #2271aa, #1e6699, #1b5b88, #184f77, #144466, #113955, #0d2d44, #0a2233, #071722, #030b11

## Harmonies

- Complementary: #bb6425
- Analogous: #25bbaf, #2532bb
- Triadic: #bb257d, #7dbb25
- Split-complementary: #bb2532, #bbaf25
- Tetradic: #af25bb, #bb6425, #32bb25

## Colors that go with #257dbb

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 #257dbb: softer than #000 and cool enough to feel like part of the same palette. Seen in: Auth0 (https://brandsweets.com/colors/brands/auth0-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Disney (https://brandsweets.com/colors/brands/disney-com), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/charcoal
- **Copper** #b87333 [harmony, pool: complementary] — Copper sits directly opposite #257dbb 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), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/copper
- **Amber** #ffbf00 [pool] — Amber is paired with #257dbb in 10 real palettes, including Wired's brand system and Lemon Squeezy's brand system, as the accent. Seen in: Wired (https://brandsweets.com/colors/brands/wired-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 12 real palettes, including Activision's brand system and Readymag's brand system put Blue beside #257dbb, as the accent. Seen in: Activision (https://brandsweets.com/colors/brands/activision-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #257dbb: 4 real palettes, including Alpine and Open House, as the supporting colour. Seen in: Alpine (https://brandsweets.com/palettes/cool#alpine), Open House (https://brandsweets.com/palettes/clean#open-house), Dusk (https://brandsweets.com/palettes/cool#dusk), Arctic (https://brandsweets.com/palettes/clean#arctic). — https://brandsweets.com/colors/cadetblue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #257dbb: 8 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
- **Crimson** #dc143c [pool] — Crimson is paired with #257dbb in 14 real palettes, including NASCAR's brand system and State Farm's brand system, as the supporting colour. Seen in: NASCAR (https://brandsweets.com/colors/brands/nascar-com), State Farm (https://brandsweets.com/colors/brands/statefarm-com), Wendy's (https://brandsweets.com/colors/brands/wendys-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #257dbb: 8 real palettes, including Deep Water and Astro's brand system, as the lead colour. Seen in: Deep Water (https://brandsweets.com/palettes/dark#deep-water), Astro (https://brandsweets.com/colors/brands/astro-build), Telegram (https://brandsweets.com/colors/brands/telegram-org), Venmo (https://brandsweets.com/colors/brands/venmo-com). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 4.44:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #247ab7 (4.62:1); AA: background → #080808 (4.51:1); AAA: text → #1b5b88 (7.24:1)
- On black (#000000): 4.73:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #489edb (7.19:1)

## Brands using this color

- **Wired** — primary #057dbc (Δ 1.022) — https://brandsweets.com/colors/brands/wired-com
- **Honda** — accent #337ab7 (Δ 1.11) — https://brandsweets.com/colors/brands/honda-com
- **Hershey's** — accent #007bbd (Δ 1.412) — https://brandsweets.com/colors/brands/hersheys-com
- **FedEx** — accent #007ab7 (Δ 1.696) — https://brandsweets.com/colors/brands/fedex-com
- **American Express** — primary #2e77bc (Δ 1.739) — https://brandsweets.com/colors/brands/americanexpress-com
- **Dollar General** — accent #2a77bd (Δ 1.783) — https://brandsweets.com/colors/brands/dollargeneral-com
- **NASCAR** — accent #007ac2 (Δ 1.935) — https://brandsweets.com/colors/brands/nascar-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/257dbb-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: "#257dbb" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.