Color

#573b8c

#573b8c
hex#573b8c
rgbrgb(87, 59, 140)
hslhsl(261, 41%, 39%)
oklchoklch(0.426 0.129 296.4)
Closest name: darkslateblue (#483d8b)Relative luminance 0.0705

Tints & shades

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

Harmonies

Complementary

Open in tool →

#708c3b

#3b478c · #803b8c

#8c573b · #3b8c57

Split-complementary

Open in tool →

#8c803b · #478c3b

#8c3b47 · #708c3b · #3b8c80

Contrast

#573b8c as textRatioAAAA largeAAAFix
Aaon white
8.72:1passpasspassPasses AAA — no fix needed.
Aaon black
2.41:1failfailfail
  • AA: use #8464be as the text (4.55:1)
  • AAA: use #a38ccf as the text (7.21:1)
  • AA: or shift the background to #bdbdbd (4.64:1)
  • AAA: or shift the background to #e8e8e8 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #573b8c 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

#573b8c reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #573b8c
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

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

analyze #573b8c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/573b8c-af9cc4-dfcb4e-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