# #577ee0

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

## Values

- Hex: `#577ee0`
- RGB: rgb(87, 126, 224)
- HSL: hsl(223, 69%, 61%)
- OKLCH: oklch(0.612 0.155 265.7)
- Relative luminance: 0.2233
- Nearest named color: Blue Jay (#5588dd, Δ 2.761) — https://brandsweets.com/colors/blue-jay
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/577ee0

## Tints & shades

- Tints (toward white): #688be3, #7595e6, #86a2e9, #98b0ec, #a9bdef, #b6c7f2, #c7d4f5, #d8e1f8, #e5ebfa, #f6f8fd
- Shades (toward black): #3d6adb, #2859d7, #234fbe, #1e44a4, #1a3b8e, #153074, #11265a, #0c1b41, #08122b, #030711

## Harmonies

- Complementary: #e0b957
- Analogous: #57c2e0, #7557e0
- Triadic: #e0577e, #7ee057
- Split-complementary: #e07557, #c2e057
- Tetradic: #e057c2, #e0b957, #57e075

## Colors that go with #577ee0

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 #577ee0: 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), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Auth0 (https://brandsweets.com/colors/brands/auth0-com). — https://brandsweets.com/colors/charcoal
- **Copper** #b87333 [harmony, pool: complementary] — Copper sits directly opposite #577ee0 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 #577ee0 in 13 real palettes, including Google's brand system and Heatwave, as the accent. Seen in: Google (https://brandsweets.com/colors/brands/google-com), Heatwave (https://brandsweets.com/palettes/warm#heatwave), Walmart (https://brandsweets.com/colors/brands/walmart-com), 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 #577ee0, 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 #577ee0: 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), 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 #577ee0 in 14 real palettes, including Marvel's brand system and Pizza Hut's brand system, as the accent. Seen in: Marvel (https://brandsweets.com/colors/brands/marvel-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-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 #577ee0: 10 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 #577ee0: 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): 3.84:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #4671dd (4.5:1); AA: background → #1a1a1a (4.53:1); AAA: text → #234fbe (7.16:1)
- On black (#000000): 5.47:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #7595e6 (7.2:1)

## Brands using this color

- **Qualcomm** — secondary #5e83e2 (Δ 1.632) — https://brandsweets.com/colors/brands/qualcomm-com
- **Zed** — secondary #5c78e2 (Δ 1.641) — https://brandsweets.com/colors/brands/zed-dev

## 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/577ee0-9ca3c4-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: "#577ee0" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.