# #577de5

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

## Values

- Hex: `#577de5`
- RGB: rgb(87, 125, 229)
- HSL: hsl(224, 73%, 62%)
- OKLCH: oklch(0.613 0.163 266.6)
- Relative luminance: 0.2235
- Nearest named color: Blue Öyster Cult (#5577ee, Δ 2.2) — https://brandsweets.com/colors/blue-oyster-cult
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/577de5

## Tints & shades

- Tints (toward white): #698be8, #7695ea, #88a3ec, #95adee, #a7bbf1, #b8c8f4, #c6d3f6, #d7e0f9, #e5eafb, #f6f8fe
- Shades (toward black): #3d69e1, #2254dd, #1f4cc7, #1b42ac, #173792, #132d77, #0e235d, #0b1b47, #07112c, #030712

## Harmonies

- Complementary: #e5bf57
- Analogous: #57c4e5, #7857e5
- Triadic: #e5577d, #7de557
- Split-complementary: #e57857, #c4e557
- Tetradic: #e557c4, #e5bf57, #57e578

## Colors that go with #577de5

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 #577de5: 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), Docker (https://brandsweets.com/colors/brands/docker-com), Hinge (https://brandsweets.com/colors/brands/hinge-co). — https://brandsweets.com/colors/charcoal
- **Amber** #ffbf00 [pool] — Amber is paired with #577de5 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 #577de5, 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), Penpot (https://brandsweets.com/colors/brands/penpot-app). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #577de5: 10 real palettes, including Carrefour's brand system and Intel's brand system, as the accent. Seen in: Carrefour (https://brandsweets.com/colors/brands/carrefour-com), Intel (https://brandsweets.com/colors/brands/intel-com), Hershey's (https://brandsweets.com/colors/brands/hersheys-com), General Mills (https://brandsweets.com/colors/brands/generalmills-com). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #577de5 in 13 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 #577de5: 9 real palettes, including Patreon's brand system and Venmo's brand system, as the supporting colour. Seen in: Patreon (https://brandsweets.com/colors/brands/patreon-com), Venmo (https://brandsweets.com/colors/brands/venmo-com), Astro (https://brandsweets.com/colors/brands/astro-build), Telegram (https://brandsweets.com/colors/brands/telegram-org). — https://brandsweets.com/colors/deepskyblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #577de5: 18 real palettes, including Coursera's brand system and Guinness's brand system, as the accent. Seen in: Coursera (https://brandsweets.com/colors/brands/coursera-org), Guinness (https://brandsweets.com/colors/brands/guinness-com), Motorola (https://brandsweets.com/colors/brands/motorola-com), Fivetran blue (https://brandsweets.com/colors/brands/fivetran-com). — https://brandsweets.com/colors/denim
- **Copper** #b87333 [harmony, pool: split] — Copper is a split-complement of #577de5: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Notion (https://brandsweets.com/colors/brands/notion). — https://brandsweets.com/colors/copper

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

- On white (#ffffff): 3.84:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #466fe2 (4.53:1); AA: background → #1a1a1a (4.53:1); AAA: text → #204dcb (7.03:1)
- On black (#000000): 5.47:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #7292e9 (7:1)

## Brands using this color

- **Zed** — secondary #5c78e2 (Δ 1.315) — https://brandsweets.com/colors/brands/zed-dev
- **Qualcomm** — secondary #5e83e2 (Δ 1.966) — 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/577de5-9ca2c4-df724e-221f2d-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: "#577de5" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.