Color

#647877

#647877
hex#647877
rgbrgb(100, 120, 119)
hslhsl(177, 9%, 43%)
oklchoklch(0.556 0.024 192.8)
Closest name: Blue Blood (#6b7f81)Relative luminance 0.1747

Colors that go with #647877

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 #647877

Tints & shades

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

Harmonies

Complementary

Open in tool →

#786465

#64786d · #646f78

#776478 · #787764

Split-complementary

Open in tool →

#78646f · #786d64

#6d6478 · #786465 · #6f7864

Contrast

#647877 as textRatioAAAA largeAAAFix
Aaon white
4.67:1passpassfail
  • AAA: use #4d5c5b as the text (7.01:1)
Aaon black
4.49:1failpassfail
  • AA: use #667a79 as the text (4.62:1)
  • AAA: use #859998 as the text (7.01:1)
  • 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 #647877 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#647877 reads as muted, minimal. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #647877
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 #647877 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/647877-a2bcbe-d4599b-1f282d-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