Color

#57586b

#57586b
hex#57586b
rgbrgb(87, 88, 107)
hslhsl(237, 10%, 38%)
oklchoklch(0.467 0.031 282.8)
Closest name: Blackwater (#545663)Relative luminance 0.1007

Colors that go with #57586b

Teal, Blue and Cadet 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 →

#6b6a57

#57626b · #60576b

#6b5758 · #586b57

Split-complementary

Open in tool →

#6b6057 · #626b57

#6b5762 · #6b6a57 · #576b60

Contrast

#57586b as textRatioAAAA largeAAAFix
Aaon white
6.97:1passpassfail
  • AAA: use #555668 as the text (7.2:1)
Aaon black
3.01:1failpassfail
  • AA: use #73748c as the text (4.61:1)
  • AAA: use #9495a8 as the text (7.12:1)
  • AA: or shift the background to #d1d1d1 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #57586b 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 #57586b
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 #57586b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/57586b-9f9cc4-df924e-251f2d-e9edf1?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