Color

#645754

#645754
hex#645754
rgbrgb(100, 87, 84)
hslhsl(11, 9%, 36%)
oklchoklch(0.469 0.018 33.1)
Closest name: Bark (#5f5854)Relative luminance 0.1017

Colors that go with #645754

Cadet Blue, Champagne and Copper 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 →

#546164

#645459 · #645f54

#546457 · #575464

Split-complementary

Open in tool →

#54645f · #545964

#596454 · #546164 · #5f5464

Contrast

#645754 as textRatioAAAA largeAAAFix
Aaon white
6.92:1passpassfail
  • AAA: use #615451 as the text (7.25:1)
Aaon black
3.03:1failpassfail
  • AA: use #83716d as the text (4.55:1)
  • AAA: use #a29390 as the text (7.11:1)
  • AA: or shift the background to #d1d1d1 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #645754 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

#645754 reads as muted, minimal. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #645754
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 #645754 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/645754-c4a89c-62cbab-2d281f-f1e9ec?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