Color

#56636c

#56636c
hex#56636c
rgbrgb(86, 99, 108)
hslhsl(205, 11%, 38%)
oklchoklch(0.492 0.022 238.2)
Closest name: Concrete Landscape (#5c606e)Relative luminance 0.1198

Colors that go with #56636c

Charcoal, 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6c5f56

#566c6a · #56586c

#6c5663 · #636c56

Split-complementary

Open in tool →

#6c5658 · #6c6a56

#6a566c · #6c5f56 · #586c56

Contrast

#56636c as textRatioAAAA largeAAAFix
Aaon white
6.18:1passpassfail
  • AAA: use #4d5860 as the text (7.29:1)
Aaon black
3.4:1failpassfail
  • AA: use #687782 as the text (4.55:1)
  • AAA: use #8b98a2 as the text (7.11:1)
  • AA: or shift the background to #dedede (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #56636c as the background.

Brands using this color

mcpConnect your agent — build around #56636c
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 #56636c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/56636c-9cafc4-df4e58-1f212d-e9f1f0?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