Color

#513894

#513894
hex#513894
rgbrgb(81, 56, 148)
hslhsl(256, 45%, 40%)
oklchoklch(0.421 0.144 291.5)
Closest name: darkslateblue (#483d8b)Relative luminance 0.0672

Colors that go with #513894

Charcoal, Royal Blue and Sea Green 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 →

#7b9438

#384e94 · #7e3894

#945138 · #389451

Split-complementary

Open in tool →

#947e38 · #4e9438

#94384e · #7b9438 · #38947e

Contrast

#513894 as textRatioAAAA largeAAAFix
Aaon white
8.96:1passpasspassPasses AAA — no fix needed.
Aaon black
2.34:1failfailfail
  • AA: use #8067c5 as the text (4.66:1)
  • AAA: use #9f8cd4 as the text (7.18:1)
  • AA: or shift the background to #b8b8b8 (4.52:1)
  • AAA: or shift the background to #e6e6e6 (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #513894 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

#513894 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #513894
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 #513894 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/513894-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