Color

#58636f

#58636f
hex#58636f
rgbrgb(88, 99, 111)
hslhsl(211, 12%, 39%)
oklchoklch(0.495 0.024 250.6)
Closest name: Concrete Landscape (#5c606e)Relative luminance 0.1215

Colors that go with #58636f

Charcoal, Champagne and Cobalt Blue 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 →

#6f6458

#586f6f · #58586f

#6f5863 · #636f58

Split-complementary

Open in tool →

#6f5858 · #6f6f58

#6f586f · #6f6458 · #586f58

Contrast

#58636f as textRatioAAAA largeAAAFix
Aaon white
6.12:1passpassfail
  • AAA: use #4f5964 as the text (7.13:1)
Aaon black
3.43:1failpassfail
  • AA: use #697786 as the text (4.58:1)
  • AAA: use #8d99a5 as the text (7.23:1)
  • AA: or shift the background to #dedede (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #58636f as the background.

Brands using this color

mcpConnect your agent — build around #58636f
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 #58636f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/58636f-9cabc4-df534e-1f202d-e9f1f1?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