Color

#515a94

#515a94
hex#515a94
rgbrgb(81, 90, 148)
hslhsl(232, 29%, 45%)
oklchoklch(0.487 0.094 275.7)
Closest name: Dusk (#4e5481)Relative luminance 0.112

Colors that go with #515a94

Charcoal, Sea Green 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 #515a94

Tints & shades

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

Harmonies

Complementary

Open in tool →

#948b51

#517c94 · #6a5194

#94515a · #5a9451

Split-complementary

Open in tool →

#946a51 · #7c9451

#94517c · #948b51 · #51946a

Contrast

#515a94 as textRatioAAAA largeAAAFix
Aaon white
6.48:1passpassfail
  • AAA: use #4c548a as the text (7.14:1)
Aaon black
3.24:1failpassfail
  • AA: use #6871ac as the text (4.55:1)
  • AAA: use #8c93c0 as the text (7.05:1)
  • AA: or shift the background to #d9d9d9 (4.59:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #515a94 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 #515a94
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 #515a94 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/515a94-9c9dc4-df864e-231f2d-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