Color

#516f76

#516f76
hex#516f76
rgbrgb(81, 111, 118)
hslhsl(191, 19%, 39%)
oklchoklch(0.521 0.036 213.7)
Closest name: Batman (#656e72)Relative luminance 0.1443

Tints & shades

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

Harmonies

Complementary

Open in tool →

#765751

#51766a · #515d76

#76516f · #6f7651

Split-complementary

Open in tool →

#76515d · #766a51

#6a5176 · #765751 · #5d7651

Contrast

#516f76 as textRatioAAAA largeAAAFix
Aaon white
5.41:1passpassfail
  • AAA: use #425b61 as the text (7.24:1)
Aaon black
3.89:1failpassfail
  • AA: use #597b82 as the text (4.58:1)
  • AAA: use #799ca4 as the text (7.1:1)
  • AA: or shift the background to #ebebeb (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 #516f76 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 #516f76
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #516f76 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/516f76-a2b6be-df4e7a-1f252d-e9f1ef?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