Color

#515b5d

#515b5d
hex#515b5d
rgbrgb(81, 91, 93)
hslhsl(190, 7%, 34%)
oklchoklch(0.463 0.013 211.1)
Closest name: Blindfolded (#5a5e61)Relative luminance 0.1002

Colors that go with #515b5d

Blush Pink, Cadet Blue and Champagne 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 →

#5d5351

#515d59 · #51555d

#5d515b · #5b5d51

Split-complementary

Open in tool →

#5d5155 · #5d5951

#59515d · #5d5351 · #555d51

Contrast

#515b5d as textRatioAAAA largeAAAFix
Aaon white
6.99:1passpassfail
  • AAA: use #4e585a as the text (7.32:1)
Aaon black
3:1failpassfail
  • AA: use #6b787b as the text (4.6:1)
  • AAA: use #8c999b as the text (7.14:1)
  • AA: or shift the background to #d1d1d1 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #515b5d as the background.

Brands using this color

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

Fonts for this mood

#515b5d reads as neutral, minimal. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #515b5d
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 #515b5d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/515b5d-a2beb0-c859d4-1f2d2b-eaf1e9?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