Color

#646c3d

#646c3d
hex#646c3d
rgbrgb(100, 108, 61)
hslhsl(70, 28%, 33%)
oklchoklch(0.512 0.069 116.8)
Closest name: Bancha (#666a47)Relative luminance 0.1377

Colors that go with #646c3d

Charcoal, Royal Blue and Slate 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 #646c3d

Tints & shades

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

Harmonies

Complementary

Open in tool →

#443d6c

#6c5c3d · #4c6c3d

#3d646c · #6c3d64

Split-complementary

Open in tool →

#3d4c6c · #5c3d6c

#3d6c5c · #443d6c · #6c3d4c

Contrast

#646c3d as textRatioAAAA largeAAAFix
Aaon white
5.59:1passpassfail
  • AAA: use #555b33 as the text (7.17:1)
Aaon black
3.75:1failpassfail
  • AA: use #707944 as the text (4.51:1)
  • AAA: use #919d58 as the text (7.17:1)
  • AA: or shift the background to #e8e8e8 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #646c3d 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

mcpConnect your agent — build around #646c3d
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 #646c3d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/646c3d-b6bea2-4e7cdf-252d1f-f1efe9?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