# #584fe3

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

## Values

- Hex: `#584fe3`
- RGB: rgb(88, 79, 227)
- HSL: hsl(244, 73%, 60%)
- OKLCH: oklch(0.529 0.216 278.7)
- Relative luminance: 0.1321
- Nearest named color: Arcane Brew (#5260e1, Δ 3.668) — https://brandsweets.com/colors/arcane-brew
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/584fe3

## Tints & shades

- Tints (toward white): #6960e6, #7a72e9, #867feb, #9791ee, #a8a2f1, #b8b4f3, #c9c6f6, #d5d3f8, #e6e5fb, #f7f6fe
- Shades (toward black): #3f34df, #2e22d8, #281ebe, #241aa8, #1e168d, #181273, #140e5d, #0e0a42, #09072c, #040312

## Harmonies

- Complementary: #dae34f
- Analogous: #4f8fe3, #a34fe3
- Triadic: #e3584f, #4fe358
- Split-complementary: #e3a34f, #8fe34f
- Tetradic: #e34f8f, #dae34f, #4fe3a3

## Colors that go with #584fe3

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 #584fe3: softer than #000 and cool enough to feel like part of the same palette. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), Docker (https://brandsweets.com/colors/brands/docker-com), UEFA (https://brandsweets.com/colors/brands/uefa-com), Zoom (https://brandsweets.com/colors/brands/zoom-us). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #584fe3 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Netflix (https://brandsweets.com/colors/brands/netflix), Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com), Coinbase (https://brandsweets.com/colors/brands/coinbase). — https://brandsweets.com/colors/seagreen
- **Amber** #ffbf00 [pool] — Amber is paired with #584fe3 in 5 real palettes, including Mastodon hosted on mastodon.social's brand system and Walmart's brand system, as the accent. Seen in: Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Walmart (https://brandsweets.com/colors/brands/walmart-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 9 real palettes, including Signal's brand system and Headspace's brand system put Blue beside #584fe3, as the supporting colour. Seen in: Signal (https://brandsweets.com/colors/brands/signal-org), Headspace (https://brandsweets.com/colors/brands/headspace-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Dropbox (https://brandsweets.com/colors/brands/dropbox-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #584fe3: 10 real palettes, including NHL's brand system and Nokia's brand system, as the accent. Seen in: NHL (https://brandsweets.com/colors/brands/nhl-com), Nokia (https://brandsweets.com/colors/brands/nokia-com), Nivea (https://brandsweets.com/colors/brands/nivea-com), Warbyparker (https://brandsweets.com/colors/brands/warbyparker-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #584fe3: 8 real palettes, including Roblox's brand system and Mastodon hosted on mastodon.social's brand system, as the supporting colour. Seen in: Roblox (https://brandsweets.com/colors/brands/roblox-com), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Webflow (https://brandsweets.com/colors/brands/webflow-com). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #584fe3 in 15 real palettes, including Chase's brand system and Toyota's brand system, as the accent. Seen in: Chase (https://brandsweets.com/colors/brands/chase-com), Toyota (https://brandsweets.com/colors/brands/toyota-com), Netflix (https://brandsweets.com/colors/brands/netflix), Ulta Beauty (https://brandsweets.com/colors/brands/ulta-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #584fe3: 7 real palettes, including Calm's brand system and Elastic's brand system, as the lead colour. Seen in: Calm (https://brandsweets.com/colors/brands/calm-com), Elastic (https://brandsweets.com/colors/brands/elastic-co), Kraken (https://brandsweets.com/colors/brands/kraken-com), Warp (https://brandsweets.com/colors/brands/warp-dev). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 5.77:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #4438e0 (7.27:1)
- On black (#000000): 3.64:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #6d65e7 (4.67:1); AA: background → #e6e6e6 (4.62:1); AAA: text → #938ced (7.21:1)

## 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/584fe3-a39cc4-dfa24e-261f2d-e9edf1?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: "#584fe3" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.