Color

#645d40

#645d40
hex#645d40
rgbrgb(100, 93, 64)
hslhsl(48, 22%, 32%)
oklchoklch(0.477 0.044 96.2)
Closest name: Cypress (#585d40)Relative luminance 0.1091

Colors that go with #645d40

Charcoal, Slate Blue and Champagne 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 →

#404764

#644a40 · #596440

#40645c · #5c4064

Split-complementary

Open in tool →

#405964 · #4a4064

#40644a · #404764 · #644059

Contrast

#645d40 as textRatioAAAA largeAAAFix
Aaon white
6.6:1passpassfail
  • AAA: use #60593e as the text (7.01:1)
Aaon black
3.18:1failpassfail
  • AA: use #807652 as the text (4.63:1)
  • AAA: use #a0956a as the text (7:1)
  • AA: or shift the background to #d6d6d6 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #645d40 as the background.

Brands using this color

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

Palettes built around it

Fonts for this mood

#645d40 reads as warm, muted, editorial. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #645d40
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 #645d40 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/645d40-c4c09c-62aacb-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