Color

#577f7f

#577f7f
hex#577f7f
rgbrgb(87, 127, 127)
hslhsl(180, 19%, 42%)
oklchoklch(0.567 0.045 196)
Closest name: Blue Blood (#6b7f81)Relative luminance 0.1874

Colors that go with #577f7f

Charcoal, Copper and Blush Pink 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 #577f7f

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7f5757

#577f6b · #576b7f

#7f577f · #7f7f57

Split-complementary

Open in tool →

#7f576b · #7f6b57

#6b577f · #7f5757 · #6b7f57

Contrast

#577f7f as textRatioAAAA largeAAAFix
Aaon white
4.42:1failpassfail
  • AA: use #557c7c as the text (4.6:1)
  • AAA: use #405e5e as the text (7.05:1)
  • AA: or shift the background to #080808 (4.53:1)
Aaon black
4.75:1passpassfail
  • AAA: use #709e9e as the text (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #577f7f 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 #577f7f
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 #577f7f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/577f7f-a2bbbe-d45994-1f272d-e9f1ed?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