Color

#515476

#515476
hex#515476
rgbrgb(81, 84, 118)
hslhsl(235, 19%, 39%)
oklchoklch(0.457 0.055 280.1)
Closest name: Deep Indigo (#4c567a)Relative luminance 0.094

Colors that go with #515476

Steel Blue, Teal 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.

Real palettes that use #515476

Tints & shades

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

Harmonies

Complementary

Open in tool →

#767351

#516776 · #605176

#765154 · #547651

Split-complementary

Open in tool →

#766051 · #677651

#765167 · #767351 · #517660

Contrast

#515476 as textRatioAAAA largeAAAFix
Aaon white
7.29:1passpasspassPasses AAA — no fix needed.
Aaon black
2.88:1failfailfail
  • AA: use #70749e as the text (4.68:1)
  • AAA: use #9295b5 as the text (7.19:1)
  • AA: or shift the background to #cccccc (4.54:1)
  • AAA: or shift the background to #fcfcfc (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #515476 as the background.

Brands using this color

mcpConnect your agent — build around #515476
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 #515476 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/515476-9e9cc4-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