Color

#66913b

#66913b
hex#66913b
rgbrgb(102, 145, 59)
hslhsl(90, 42%, 40%)
oklchoklch(0.606 0.126 131.5)
Closest name: olivedrab (#6b8e23)Relative luminance 0.2339

Colors that go with #66913b

Charcoal, Blue 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 →

#663b91

#91913b · #3b913b

#3b6691 · #913b66

Split-complementary

Open in tool →

#3b3b91 · #913b91

#3b9191 · #663b91 · #913b3b

Contrast

#66913b as textRatioAAAA largeAAAFix
Aaon white
3.7:1failpassfail
  • AA: use #597f34 as the text (4.66:1)
  • AAA: use #425e26 as the text (7.34:1)
  • AA: or shift the background to #1c1c1c (4.61:1)
Aaon black
5.68:1passpassfail
  • AAA: use #73a343 as the text (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #66913b as the background.

Brands using this color

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

mcpConnect your agent — build around #66913b
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 #66913b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66913b-adbea2-514edf-202d1f-f1f1e9?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