Color

#3f784a

#3f784a
hex#3f784a
rgbrgb(63, 120, 74)
hslhsl(132, 31%, 36%)
oklchoklch(0.521 0.094 148.6)
Closest name: Autumn Crocodile (#447744)Relative luminance 0.1498

Colors that go with #3f784a

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 →

#783f6d

#50783f · #3f7867

#4b3f78 · #784b3f

Split-complementary

Open in tool →

#673f78 · #783f50

#3f5078 · #783f6d · #78673f

Contrast

#3f784a as textRatioAAAA largeAAAFix
Aaon white
5.25:1passpassfail
  • AAA: use #33613c as the text (7.2:1)
Aaon black
4:1failpassfail
  • AA: use #458251 as the text (4.56:1)
  • AAA: use #58a768 as the text (7.14:1)
  • AA: or shift the background to #f0f0f0 (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f784a as the background.

Brands using this color

mcpConnect your agent — build around #3f784a
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 #3f784a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f784a-a2beab-b64edf-1f2d28-ecf1e9?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