Color

#645e4a

#645e4a
hex#645e4a
rgbrgb(100, 94, 74)
hslhsl(46, 15%, 34%)
oklchoklch(0.482 0.032 93.3)
Closest name: Black Forest (#5e6354)Relative luminance 0.1121

Colors that go with #645e4a

Charcoal, Slate Blue and Cadet 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4a5064

#64514a · #5d644a

#4a645e · #5e4a64

Split-complementary

Open in tool →

#4a5d64 · #514a64

#4a6451 · #4a5064 · #644a5d

Contrast

#645e4a as textRatioAAAA largeAAAFix
Aaon white
6.48:1passpassfail
  • AAA: use #5e5845 as the text (7.1:1)
Aaon black
3.24:1failpassfail
  • AA: use #7e765d as the text (4.64:1)
  • AAA: use #9d957b as the text (7.02:1)
  • AA: or shift the background to #d9d9d9 (4.59:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #645e4a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#645e4a reads as warm, muted, editorial. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #645e4a
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 #645e4a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/645e4a-c4bf9c-62adcb-2a2d1f-f1ece9?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