Color

#515794

#515794
hex#515794
rgbrgb(81, 87, 148)
hslhsl(235, 29%, 45%)
oklchoklch(0.48 0.098 277.8)
Closest name: Dusk (#4e5481)Relative luminance 0.107

Colors that go with #515794

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 #515794

Tints & shades

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

Harmonies

Complementary

Open in tool →

#948e51

#517894 · #6d5194

#945157 · #579451

Split-complementary

Open in tool →

#946d51 · #789451

#945178 · #948e51 · #51946d

Contrast

#515794 as textRatioAAAA largeAAAFix
Aaon white
6.69:1passpassfail
  • AAA: use #4e538d as the text (7.13:1)
Aaon black
3.14:1failpassfail
  • AA: use #6b71ae as the text (4.6:1)
  • AAA: use #8f93c1 as the text (7.11:1)
  • AA: or shift the background to #d4d4d4 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #515794 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 #515794
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 #515794 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/515794-9e9cc4-df8d4e-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