Color

#657c81

#657c81
hex#657c81
rgbrgb(101, 124, 129)
hslhsl(191, 12%, 45%)
oklchoklch(0.57 0.028 212.4)
Closest name: Blue Blood (#6b7f81)Relative luminance 0.1877

Colors that go with #657c81

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.

Real palettes that use #657c81

Tints & shades

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

Harmonies

Complementary

Open in tool →

#816a65

#658178 · #656e81

#81657b · #7b8165

Split-complementary

Open in tool →

#81656e · #817865

#786581 · #816a65 · #6e8165

Contrast

#657c81 as textRatioAAAA largeAAAFix
Aaon white
4.42:1failpassfail
  • AA: use #63797e as the text (4.6:1)
  • AAA: use #4a5b5e as the text (7.12:1)
  • AA: or shift the background to #080808 (4.53:1)
Aaon black
4.75:1passpassfail
  • AAA: use #849a9f as the text (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #657c81 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 #657c81
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 #657c81 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/657c81-a2b6be-df4e7a-1f252d-e9f1ef?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