Color

#57599e

#57599e
hex#57599e
rgbrgb(87, 89, 158)
hslhsl(238, 29%, 48%)
oklchoklch(0.495 0.109 280.4)
Closest name: Passion Flower (#6f5698)Relative luminance 0.1164

Colors that go with #57599e

Charcoal, Amber 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 →

#9e9c57

#577d9e · #78579e

#9e5759 · #599e57

Split-complementary

Open in tool →

#9e7857 · #7d9e57

#9e577d · #9e9c57 · #579e78

Contrast

#57599e as textRatioAAAA largeAAAFix
Aaon white
6.31:1passpassfail
  • AAA: use #505291 as the text (7.1:1)
Aaon black
3.33:1failpassfail
  • AA: use #6e70af as the text (4.6:1)
  • AAA: use #9294c3 as the text (7.25:1)
  • AA: or shift the background to #dbdbdb (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #57599e as the background.

Brands using this color

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

mcpConnect your agent — build around #57599e
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 #57599e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/57599e-9f9cc4-df944e-251f2d-e9edf1?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