Color

#516d85

#516d85
hex#516d85
rgbrgb(81, 109, 133)
hslhsl(208, 24%, 42%)
oklchoklch(0.522 0.05 244.8)
Closest name: Calypso (#3d7188)Relative luminance 0.1438

Tints & shades

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

Harmonies

Complementary

Open in tool →

#856951

#518583 · #515385

#85516d · #6d8551

Split-complementary

Open in tool →

#855153 · #858351

#835185 · #856951 · #538551

Contrast

#516d85 as textRatioAAAA largeAAAFix
Aaon white
5.42:1passpassfail
  • AAA: use #445b6f as the text (7.07:1)
Aaon black
3.88:1failpassfail
  • AA: use #5b7a95 as the text (4.66:1)
  • AAA: use #819bb1 as the text (7.26:1)
  • AA: or shift the background to #ebebeb (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #516d85 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 #516d85
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 #516d85 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/516d85-9cadc4-df4e51-1f212d-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