Color

#577a7f

#577a7f
hex#577a7f
rgbrgb(87, 122, 127)
hslhsl(188, 19%, 42%)
oklchoklch(0.555 0.04 207.1)
Closest name: Blue Blood (#6b7f81)Relative luminance 0.1748

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7f5c57

#577f71 · #57667f

#7f577a · #7a7f57

Split-complementary

Open in tool →

#7f5766 · #7f7157

#71577f · #7f5c57 · #667f57

Contrast

#577a7f as textRatioAAAA largeAAAFix
Aaon white
4.67:1passpassfail
  • AAA: use #425d61 as the text (7.07:1)
Aaon black
4.5:1failpassfail
  • AA: use #597d82 as the text (4.68:1)
  • AAA: use #769ca2 as the text (7.05:1)
  • AA: or shift the background to #fcfcfc (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 #577a7f 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 #577a7f
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #577a7f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/577a7f-a2b7be-df4e81-1f252d-e9f1ee?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