Color

#3f7439

#3f7439
hex#3f7439
rgbrgb(63, 116, 57)
hslhsl(114, 34%, 34%)
oklchoklch(0.507 0.106 141.8)
Closest name: Cucumber Queen (#3c773c)Relative luminance 0.1384

Colors that go with #3f7439

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 →

#6e3974

#5d7439 · #397451

#393f74 · #74393f

Split-complementary

Open in tool →

#513974 · #74395d

#395d74 · #6e3974 · #745139

Contrast

#3f7439 as textRatioAAAA largeAAAFix
Aaon white
5.57:1passpassfail
  • AAA: use #366331 as the text (7.03:1)
Aaon black
3.77:1failpassfail
  • AA: use #478240 as the text (4.54:1)
  • AAA: use #5ba752 as the text (7.09:1)
  • AA: or shift the background to #e8e8e8 (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f7439 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 #3f7439
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 #3f7439 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f7439-a2bea2-8a4edf-1f2d24-eef1e9?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