Color

#513e84

#513e84
hex#513e84
rgbrgb(81, 62, 132)
hslhsl(256, 36%, 38%)
oklchoklch(0.42 0.113 293.4)
Closest name: darkslateblue (#483d8b)Relative luminance 0.0686

Colors that go with #513e84

Charcoal, Steel Blue 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 →

#71843e

#3e4e84 · #743e84

#84513e · #3e8451

Split-complementary

Open in tool →

#84743e · #4e843e

#843e4e · #71843e · #3e8474

Contrast

#513e84 as textRatioAAAA largeAAAFix
Aaon white
8.85:1passpasspassPasses AAA — no fix needed.
Aaon black
2.37:1failfailfail
  • AA: use #7f6ab9 as the text (4.66:1)
  • AAA: use #9d8dc9 as the text (7.09:1)
  • AA: or shift the background to #bababa (4.56:1)
  • AAA: or shift the background to #e6e6e6 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #513e84 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

#513e84 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #513e84
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 #513e84 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/513e84-ab9cc4-dfbf4e-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