# #573a73

A color — cool, muted. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#573a73`
- RGB: rgb(87, 58, 115)
- HSL: hsl(271, 33%, 34%)
- OKLCH: oklch(0.408 0.097 306)
- Relative luminance: 0.0629
- Nearest named color: Heartless (#623b70, Δ 2.229) — https://brandsweets.com/colors/heartless
- Moods: cool, muted
- Page: https://brandsweets.com/colors/573a73

## Tints & shades

- Tints (toward white): #674488, #79509f, #8860af, #9a77bb, #a98cc5, #b8a0cf, #cab8db, #d9cce5, #ebe4f1, #faf8fc
- Shades (toward black): #503569, #48305f, #402b55, #39264b, #312040, #291b36, #22162c, #1a1122, #120c18, #0a070e

## Harmonies

- Complementary: #56733a
- Analogous: #3b3a73, #733a72
- Triadic: #73583a, #3a7358
- Split-complementary: #72733a, #3a733b
- Tetradic: #733b3a, #56733a, #3a7273

## Colors that go with #573a73

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Crimson** #dc143c [pool] — Crimson is paired with #573a73 in 7 real palettes, including Wells Fargo's brand system and Lenovo's brand system, as the lead colour. Seen in: Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Lenovo (https://brandsweets.com/colors/brands/lenovo-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Marvel (https://brandsweets.com/colors/brands/marvel-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #573a73: 8 real palettes, including Hinge's brand system and HP's brand system, as the accent. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), HP (https://brandsweets.com/colors/brands/hp-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Starlink (https://brandsweets.com/colors/brands/starlink-com). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 8 real palettes, including Microsoft's brand system and First Snow put Midnight Blue beside #573a73, as the accent. Seen in: Microsoft (https://brandsweets.com/colors/brands/microsoft-com), First Snow (https://brandsweets.com/palettes/cool#first-snow), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/midnightblue
- **Powder Blue** #b0e0e6 [pool] — Designers have shipped Powder Blue with #573a73: 6 real palettes, including First Snow and Macaron, as the accent. Seen in: First Snow (https://brandsweets.com/palettes/cool#first-snow), Macaron (https://brandsweets.com/palettes/light#macaron), Nursery (https://brandsweets.com/palettes/light#nursery), Glacier (https://brandsweets.com/palettes/cool#glacier). — https://brandsweets.com/colors/powderblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #573a73 in 9 real palettes, including Console Light and Zoom's brand system, as the lead colour. Seen in: Console Light (https://brandsweets.com/palettes/technical#console-light), Zoom (https://brandsweets.com/colors/brands/zoom-us), Nokia (https://brandsweets.com/colors/brands/nokia-com), Confluent (https://brandsweets.com/colors/brands/confluent-io). — https://brandsweets.com/colors/royalblue
- **Steel Blue** #4682b4 [pool] — Designers have shipped Steel Blue with #573a73: 6 real palettes, including Auth0's brand system and FedEx's brand system, as the lead colour. Seen in: Auth0 (https://brandsweets.com/colors/brands/auth0-com), FedEx (https://brandsweets.com/colors/brands/fedex-com), Glacier (https://brandsweets.com/palettes/cool#glacier), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/steelblue
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #573a73: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy. — https://brandsweets.com/colors/whitesmoke
- **Dark Olive Green** #556b2f [harmony: complementary] — Dark Olive Green sits directly opposite #573a73 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. — https://brandsweets.com/colors/darkolivegreen

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

- On white (#ffffff): 9.3:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.26:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #8b63b0 (4.51:1); AA: background → #b5b5b5 (4.54:1); AAA: text → #a98cc5 (7.24:1); AAA: background → #e0e0e0 (7.05:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/573a73-b59cc4-c7cb62-2c1f2d-eae9f1?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: "#573a73" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.