# #573d71

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

## Values

- Hex: `#573d71`
- RGB: rgb(87, 61, 113)
- HSL: hsl(270, 30%, 34%)
- OKLCH: oklch(0.412 0.089 305.9)
- Relative luminance: 0.0656
- Nearest named color: Drifting Violet (#5b4276, Δ 1.694) — https://brandsweets.com/colors/drifting-violet
- Moods: cool, muted
- Page: https://brandsweets.com/colors/573d71

## Tints & shades

- Tints (toward white): #664785, #78549c, #8763ab, #997ab8, #a88ec2, #b8a2cd, #c9b9da, #d9cde4, #ebe4f1, #faf8fb
- Shades (toward black): #4f3767, #47325d, #402d53, #382749, #30223f, #291d35, #21172b, #1a1221, #120c17, #0a070d

## Harmonies

- Complementary: #57713d
- Analogous: #3d3d71, #713d71
- Triadic: #71573d, #3d7157
- Split-complementary: #71713d, #3d713d
- Tetradic: #713d3d, #57713d, #3d7171

## Colors that go with #573d71

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 #573d71 in 7 real palettes, including Wells Fargo's brand system and Codecademy's brand system, as the lead colour. Seen in: Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-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 #573d71: 7 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] — 9 real palettes, including Microsoft's brand system and First Snow put Midnight Blue beside #573d71, as the accent. Seen in: Microsoft (https://brandsweets.com/colors/brands/microsoft-com), First Snow (https://brandsweets.com/palettes/cool#first-snow), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/midnightblue
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #573d71 in 4 real palettes, including Tumblr's brand system and NASA's brand system, as the accent. Seen in: Tumblr (https://brandsweets.com/colors/brands/tumblr-com), NASA (https://brandsweets.com/colors/brands/nasa-gov), Tide (https://brandsweets.com/colors/brands/tide-com), Audi (https://brandsweets.com/colors/brands/audi-com). — https://brandsweets.com/colors/orangered
- **Powder Blue** #b0e0e6 [pool] — Designers have shipped Powder Blue with #573d71: 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), Stone (https://brandsweets.com/palettes/neutral#stone). — https://brandsweets.com/colors/powderblue
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #573d71 in 12 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), Stripe (https://brandsweets.com/colors/brands/stripe), Nokia (https://brandsweets.com/colors/brands/nokia-com). — https://brandsweets.com/colors/royalblue
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #573d71: 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 #573d71 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): 9.09:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.31:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #8a67ad (4.62:1); AA: background → #b8b8b8 (4.58:1); AAA: text → #a68bc1 (7.08:1); AAA: background → #e3e3e3 (7.08:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/573d71-b59cc4-c9cb62-2c1f2d-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: "#573d71" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.