Color

#573aa1

#573aa1
hex#573aa1
rgbrgb(87, 58, 161)
hslhsl(257, 47%, 43%)
oklchoklch(0.44 0.159 291.5)
Closest name: rebeccapurple (#663399)Relative luminance 0.0763

Tints & shades

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

Harmonies

Complementary

Open in tool →

#84a13a

#3a50a1 · #8b3aa1

#a1573a · #3aa157

Split-complementary

Open in tool →

#a18b3a · #50a13a

#a13a50 · #84a13a · #3aa18b

Contrast

#573aa1 as textRatioAAAA largeAAAFix
Aaon white
8.32:1passpasspassPasses AAA — no fix needed.
Aaon black
2.53:1failfailfail
  • AA: use #8165c8 as the text (4.63:1)
  • AAA: use #a08bd5 as the text (7.15:1)
  • AA: or shift the background to #bfbfbf (4.52:1)
  • AAA: or shift the background to #ededed (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #573aa1 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

#573aa1 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #573aa1
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 #573aa1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/573aa1-ac9cc4-dfc24e-291f2d-e9ebf1?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