Color

#57688e

#57688e
hex#57688e
rgbrgb(87, 104, 142)
hslhsl(221, 24%, 45%)
oklchoklch(0.519 0.064 265.6)
Closest name: Admiral Blue (#50647f)Relative luminance 0.1388

Colors that go with #57688e

Charcoal, Sea Green and Dark Olive Green 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 →

#8e7d57

#57848e · #61578e

#8e5769 · #698e57

Split-complementary

Open in tool →

#8e6157 · #848e57

#8e5784 · #8e7d57 · #578e61

Contrast

#57688e as textRatioAAAA largeAAAFix
Aaon white
5.56:1passpassfail
  • AAA: use #4a5878 as the text (7.1:1)
Aaon black
3.78:1failpassfail
  • AA: use #61749e as the text (4.5:1)
  • AAA: use #8796b5 as the text (7.06:1)
  • AA: or shift the background to #e8e8e8 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #57688e 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 #57688e
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 #57688e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/57688e-9ca4c4-df6b4e-211f2d-e9eff1?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