Color

#515d41

#515d41
hex#515d41
rgbrgb(81, 93, 65)
hslhsl(86, 18%, 31%)
oklchoklch(0.46 0.046 127)
Closest name: Muddy Olive (#4b5d46)Relative luminance 0.0996

Colors that go with #515d41

Slate Blue, Blush Pink 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.

Real palettes that use #515d41

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4d415d

#5d5b41 · #435d41

#41515d · #5d4151

Split-complementary

Open in tool →

#41435d · #5b415d

#415d5b · #4d415d · #5d4143

Contrast

#515d41 as textRatioAAAA largeAAAFix
Aaon white
7.02:1passpasspassPasses AAA — no fix needed.
Aaon black
2.99:1failfailfail
  • AA: use #6b7b56 as the text (4.59:1)
  • AAA: use #8a9d72 as the text (7.15:1)
  • AA: or shift the background to #cfcfcf (4.51:1)
  • AAA: or shift the background to #ffffff (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #515d41 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 #515d41
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 #515d41 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/515d41-afbea2-4e56df-212d1f-f1f1e9?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