Color

#515594

#515594
hex#515594
rgbrgb(81, 85, 148)
hslhsl(236, 29%, 45%)
oklchoklch(0.476 0.101 279.1)
Closest name: Dusk (#4e5481)Relative luminance 0.1038

Colors that go with #515594

Charcoal, Steel Blue and Amber 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.

Real palettes that use #515594

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#949051

#517794 · #6e5194

#945156 · #569451

Split-complementary

Open in tool →

#946e51 · #779451

#945177 · #949051 · #51946e

Contrast

#515594 as textRatioAAAA largeAAAFix
Aaon white
6.83:1passpassfail
  • AAA: use #4e528d as the text (7.2:1)
Aaon black
3.08:1failpassfail
  • AA: use #6b6fae as the text (4.51:1)
  • AAA: use #8f93c1 as the text (7.11:1)
  • AA: or shift the background to #d4d4d4 (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #515594 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 #515594
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 #515594 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/515594-9e9cc4-df8f4e-241f2d-e9eef1?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