Color

#573c86

#573c86
hex#573c86
rgbrgb(87, 60, 134)
hslhsl(262, 38%, 38%)
oklchoklch(0.424 0.12 297.9)
Closest name: darkslateblue (#483d8b)Relative luminance 0.0698

Colors that go with #573c86

Charcoal, Royal Blue and Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#6b863c

#3c4686 · #7c3c86

#86573c · #3c8657

Split-complementary

Open in tool →

#867c3c · #46863c

#863c46 · #6b863c · #3c867c

Contrast

#573c86 as textRatioAAAA largeAAAFix
Aaon white
8.77:1passpasspassPasses AAA — no fix needed.
Aaon black
2.4:1failfailfail
  • AA: use #8668bb as the text (4.71:1)
  • AAA: use #a28bcb as the text (7.09:1)
  • AA: or shift the background to #bababa (4.52:1)
  • AAA: or shift the background to #e6e6e6 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #573c86 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#573c86 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #573c86
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #573c86 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/573c86-af9cc4-dfce4e-2a1f2d-e9eaf1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md