Color

#516485

#516485
hex#516485
rgbrgb(81, 100, 133)
hslhsl(218, 24%, 42%)
oklchoklch(0.501 0.058 261.3)
Closest name: Admiral Blue (#50647f)Relative luminance 0.1256

Colors that go with #516485

Charcoal, Sea Green and Sienna 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 →

#857251

#517e85 · #585185

#855164 · #648551

Split-complementary

Open in tool →

#855851 · #7e8551

#85517e · #857251 · #518558

Contrast

#516485 as textRatioAAAA largeAAAFix
Aaon white
5.98:1passpassfail
  • AAA: use #485875 as the text (7.17:1)
Aaon black
3.51:1failpassfail
  • AA: use #5f759b as the text (4.5:1)
  • AAA: use #8798b5 as the text (7.19:1)
  • AA: or shift the background to #e0e0e0 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #516485 as the background.

Brands using this color

mcpConnect your agent — build around #516485
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 #516485 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/516485-9ca6c4-df644e-201f2d-e9f0f1?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