Color

#516d4f

#516d4f
hex#516d4f
rgbrgb(81, 109, 79)
hslhsl(116, 16%, 37%)
oklchoklch(0.504 0.057 143)
Closest name: Cactus (#5b6f55)Relative luminance 0.1325

Colors that go with #516d4f

Charcoal, Champagne and Copper 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 #516d4f

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6b4f6d

#606d4f · #4f6d5c

#4f516d · #6d4f51

Split-complementary

Open in tool →

#5c4f6d · #6d4f60

#4f606d · #6b4f6d · #6d5c4f

Contrast

#516d4f as textRatioAAAA largeAAAFix
Aaon white
5.75:1passpassfail
  • AAA: use #465f45 as the text (7.04:1)
Aaon black
3.65:1failpassfail
  • AA: use #5e7f5c as the text (4.67:1)
  • AAA: use #7c9f7a as the text (7.1:1)
  • AA: or shift the background to #e6e6e6 (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #516d4f as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

mcpConnect your agent — build around #516d4f
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 #516d4f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/516d4f-a2bea3-8f4edf-1f2d24-eef1e9?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