Color

#515261

#515261
hex#515261
rgbrgb(81, 82, 97)
hslhsl(236, 9%, 35%)
oklchoklch(0.443 0.024 282.3)
Closest name: Black Orchid (#525463)Relative luminance 0.0865

Colors that go with #515261

Cadet Blue, 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 #515261

Tints & shades

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

Harmonies

Complementary

Open in tool →

#616051

#515a61 · #585161

#615152 · #526151

Split-complementary

Open in tool →

#615851 · #5a6151

#61515a · #616051 · #516158

Contrast

#515261 as textRatioAAAA largeAAAFix
Aaon white
7.69:1passpasspassPasses AAA — no fix needed.
Aaon black
2.73:1failfailfail
  • AA: use #727388 as the text (4.52:1)
  • AAA: use #9394a5 as the text (7.02:1)
  • AA: or shift the background to #c7c7c7 (4.55:1)
  • AAA: or shift the background to #f5f5f5 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #515261 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

Fonts for this mood

#515261 reads as muted, minimal. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #515261
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 #515261 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/515261-9e9cc4-df8f4e-241f2d-e9eef1?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