Color

#646b24

#646b24
hex#646b24
rgbrgb(100, 107, 36)
hslhsl(66, 50%, 28%)
oklchoklch(0.507 0.094 114.6)
Closest name: darkolivegreen (#556b2f)Relative luminance 0.1335

Colors that go with #646b24

Charcoal, Royal Blue and Blue Violet 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 #646b24

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2b246b

#6b4f24 · #406b24

#24646b · #6b2464

Split-complementary

Open in tool →

#24406b · #4f246b

#246b4f · #2b246b · #6b2440

Contrast

#646b24 as textRatioAAAA largeAAAFix
Aaon white
5.72:1passpassfail
  • AAA: use #565c1f as the text (7.13:1)
Aaon black
3.67:1failpassfail
  • AA: use #727a29 as the text (4.53:1)
  • AAA: use #929d34 as the text (7.09:1)
  • AA: or shift the background to #e6e6e6 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #646b24 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

#646b24 reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #646b24
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 #646b24 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/646b24-b8bea2-4e86df-262d1f-f1eee9?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