# #557de2

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

## Values

- Hex: `#557de2`
- RGB: rgb(85, 125, 226)
- HSL: hsl(223, 71%, 61%)
- OKLCH: oklch(0.61 0.159 265.7)
- Relative luminance: 0.2209
- Nearest named color: Blue Öyster Cult (#5577ee, Δ 2.524) — https://brandsweets.com/colors/blue-oyster-cult
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/557de2

## Tints & shades

- Tints (toward white): #668ae5, #7394e7, #85a2ea, #96afed, #a8bcf0, #b5c6f2, #c6d4f5, #d8e1f8, #e5ebfb, #f6f8fe
- Shades (toward black): #3b69de, #2558da, #214ec0, #1c43a6, #183a90, #143076, #10255c, #0b1a41, #07122c, #030711

## Harmonies

- Complementary: #e2ba55
- Analogous: #55c4e2, #7455e2
- Triadic: #e2557d, #7de255
- Split-complementary: #e27455, #c4e255
- Tetradic: #e255c4, #e2ba55, #55e274

## Colors that go with #557de2

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 #557de2: softer than #000 and cool enough to feel like part of the same palette. Seen in: Disney (https://brandsweets.com/colors/brands/disney-com), Plaid (https://brandsweets.com/colors/brands/plaid-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/charcoal
- **Copper** #b87333 [harmony, pool: complementary] — Copper sits directly opposite #557de2 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 #557de2 in 13 real palettes, including Google's brand system and Walmart's brand system, as the accent. Seen in: Google (https://brandsweets.com/colors/brands/google-com), Walmart (https://brandsweets.com/colors/brands/walmart-com), Heatwave (https://brandsweets.com/palettes/warm#heatwave), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 14 real palettes, including Qualcomm's brand system and Readymag's brand system put Blue beside #557de2, as the accent. Seen in: Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Cargo (https://brandsweets.com/colors/brands/cargo-site), Samsung (https://brandsweets.com/colors/brands/samsung-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #557de2: 11 real palettes, including Carrefour's brand system and Hershey's's brand system, as the accent. Seen in: Carrefour (https://brandsweets.com/colors/brands/carrefour-com), Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Intel (https://brandsweets.com/colors/brands/intel-com), General Mills (https://brandsweets.com/colors/brands/generalmills-com). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #557de2 in 14 real palettes, including Pizza Hut's brand system and Marvel's brand system, as the supporting colour. Seen in: Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), NASCAR (https://brandsweets.com/colors/brands/nascar-com), Foot Locker (https://brandsweets.com/colors/brands/footlocker-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #557de2: 9 real palettes, including Patreon's brand system and Astro's brand system, as the supporting colour. Seen in: Patreon (https://brandsweets.com/colors/brands/patreon-com), 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
- **Denim** #1560bd [pool] — Designers have shipped Denim with #557de2: 18 real palettes, including Coursera's brand system and Motorola's brand system, as the accent. Seen in: Coursera (https://brandsweets.com/colors/brands/coursera-org), Motorola (https://brandsweets.com/colors/brands/motorola-com), Guinness (https://brandsweets.com/colors/brands/guinness-com), Xbox (https://brandsweets.com/colors/brands/xbox-com). — https://brandsweets.com/colors/denim

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

- On white (#ffffff): 3.88:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #4370df (4.54:1); AA: background → #171717 (4.63:1); AAA: text → #214fc4 (7.05:1)
- On black (#000000): 5.42:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #7394e7 (7.12:1)

## Brands using this color

- **Zed** — secondary #5c78e2 (Δ 1.39) — https://brandsweets.com/colors/brands/zed-dev
- **Qualcomm** — secondary #5e83e2 (Δ 1.996) — https://brandsweets.com/colors/brands/qualcomm-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/557de2-9ca3c4-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: "#557de2" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.