Color

#657d8b

#657d8b
hex#657d8b
rgbrgb(101, 125, 139)
hslhsl(202, 16%, 47%)
oklchoklch(0.576 0.035 233.8)
Closest name: Citadel (#6a7f8b)Relative luminance 0.193

Colors that go with #657d8b

Charcoal, Copper and Amber 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 #657d8b

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8b7365

#658b86 · #656a8b

#8b657d · #7d8b65

Split-complementary

Open in tool →

#8b656a · #8b8665

#86658b · #8b7365 · #6a8b65

Contrast

#657d8b as textRatioAAAA largeAAAFix
Aaon white
4.32:1failpassfail
  • AA: use #607885 as the text (4.64:1)
  • AAA: use #495a65 as the text (7.16:1)
  • AA: or shift the background to #0a0a0a (4.58:1)
Aaon black
4.86:1passpassfail
  • AAA: use #869ba7 as the text (7.26:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #657d8b 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 #657d8b
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 #657d8b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/657d8b-9cb1c4-df4e5f-1f222d-e9f1f0?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