Color

#3f7340

#3f7340
hex#3f7340
rgbrgb(63, 115, 64)
hslhsl(121, 29%, 35%)
oklchoklch(0.505 0.097 144.4)
Closest name: Autumn Crocodile (#447744)Relative luminance 0.1369

Colors that go with #3f7340

Charcoal, Royal Blue and Rust 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 →

#733f72

#58733f · #3f735a

#403f73 · #73403f

Split-complementary

Open in tool →

#5a3f73 · #733f58

#3f5873 · #733f72 · #735a3f

Contrast

#3f7340 as textRatioAAAA largeAAAFix
Aaon white
5.62:1passpassfail
  • AAA: use #366337 as the text (7.01:1)
Aaon black
3.74:1failpassfail
  • AA: use #488449 as the text (4.67:1)
  • AAA: use #5ea65f as the text (7.1:1)
  • AA: or shift the background to #e6e6e6 (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f7340 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 #3f7340
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 #3f7340 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f7340-a2bea6-9b4edf-1f2d26-edf1e9?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