Color

#513a6e

#513a6e
hex#513a6e
rgbrgb(81, 58, 110)
hslhsl(267, 31%, 33%)
oklchoklch(0.398 0.088 303)
Closest name: Imperial Purple (#5b3167)Relative luminance 0.059

Colors that go with #513a6e

Blue, Crimson and Denim 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 →

#576e3a

#3a3d6e · #6c3a6e

#6e523a · #3a6e52

Split-complementary

Open in tool →

#6e6c3a · #3d6e3a

#6e3a3d · #576e3a · #3a6e6c

Contrast

#513a6e as textRatioAAAA largeAAAFix
Aaon white
9.63:1passpasspassPasses AAA — no fix needed.
Aaon black
2.18:1failfailfail
  • AA: use #8969b0 as the text (4.71:1)
  • AAA: use #a68dc3 as the text (7.22:1)
  • AA: or shift the background to #b3b3b3 (4.59:1)
  • AAA: or shift the background to #dedede (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #513a6e 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 #513a6e
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 #513a6e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/513a6e-b39cc4-dfda4e-2c1f2d-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