Color

#516276

#516276
hex#516276
rgbrgb(81, 98, 118)
hslhsl(212, 19%, 39%)
oklchoklch(0.49 0.038 252.7)
Closest name: Admiral Blue (#50647f)Relative luminance 0.1179

Colors that go with #516276

Charcoal, Sienna 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#766551

#517576 · #525176

#765162 · #627651

Split-complementary

Open in tool →

#765251 · #757651

#765175 · #766551 · #517652

Contrast

#516276 as textRatioAAAA largeAAAFix
Aaon white
6.25:1passpassfail
  • AAA: use #48586a as the text (7.29:1)
Aaon black
3.36:1failpassfail
  • AA: use #637992 as the text (4.68:1)
  • AAA: use #8698ac as the text (7.1:1)
  • AA: or shift the background to #dbdbdb (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #516276 as the background.

Brands using this color

mcpConnect your agent — build around #516276
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 #516276 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/516276-9caac4-df564e-1f202d-e9f1f1?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