Color

#51675d

#51675d
hex#51675d
rgbrgb(81, 103, 93)
hslhsl(153, 12%, 36%)
oklchoklch(0.493 0.031 165.7)
Closest name: Dark Forest (#556962)Relative luminance 0.1224

Colors that go with #51675d

Charcoal, 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 →

#67515b

#516752 · #516667

#5d5167 · #675d51

Split-complementary

Open in tool →

#675166 · #675251

#525167 · #67515b · #666751

Contrast

#51675d as textRatioAAAA largeAAAFix
Aaon white
6.09:1passpassfail
  • AAA: use #485b53 as the text (7.25:1)
Aaon black
3.45:1failpassfail
  • AA: use #607b6f as the text (4.56:1)
  • AAA: use #819c90 as the text (7.09:1)
  • AA: or shift the background to #dedede (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 #51675d 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 #51675d
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 #51675d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51675d-a2beb5-d459cc-1f2d2d-e9f1ea?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