Color

#513c72

#513c72
hex#513c72
rgbrgb(81, 60, 114)
hslhsl(263, 31%, 34%)
oklchoklch(0.405 0.091 300.3)
Closest name: Drifting Violet (#5b4276)Relative luminance 0.062

Colors that go with #513c72

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 →

#5d723c

#3c4272 · #6b3c72

#72503c · #3c7250

Split-complementary

Open in tool →

#726b3c · #42723c

#723c42 · #5d723c · #3c726b

Contrast

#513c72 as textRatioAAAA largeAAAFix
Aaon white
9.38:1passpasspassPasses AAA — no fix needed.
Aaon black
2.24:1failfailfail
  • AA: use #8469b0 as the text (4.63:1)
  • AAA: use #a28dc3 as the text (7.13:1)
  • AA: or shift the background to #b5b5b5 (4.57:1)
  • AAA: or shift the background to #e0e0e0 (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 #513c72 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 #513c72
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 #513c72 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/513c72-b09cc4-dfd04e-2b1f2d-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