Color

#3c9b31

#3c9b31
hex#3c9b31
rgbrgb(60, 155, 49)
hslhsl(114, 52%, 40%)
oklchoklch(0.611 0.169 141.6)
Closest name: Grass Is Greener (#3f9b0b)Relative luminance 0.2463

Colors that go with #3c9b31

Charcoal, Crimson and Blue 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 →

#90319b

#719b31 · #319b5b

#313c9b · #9b313c

Split-complementary

Open in tool →

#5b319b · #9b3171

#31719b · #90319b · #9b5b31

Contrast

#3c9b31 as textRatioAAAA largeAAAFix
Aaon white
3.54:1failpassfail
  • AA: use #33842a as the text (4.69:1)
  • AAA: use #276520 as the text (7.07:1)
  • AA: or shift the background to #212121 (4.54:1)
Aaon black
5.93:1passpassfail
  • AAA: use #42ab36 as the text (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3c9b31 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 #3c9b31
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 #3c9b31 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3c9b31-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