Color

#3d9957

#3d9957
hex#3d9957
rgbrgb(61, 153, 87)
hslhsl(137, 43%, 42%)
oklchoklch(0.611 0.132 150)
Closest name: Eucalyptus (#329760)Relative luminance 0.2446

Colors that go with #3d9957

Charcoal, Blue and Crimson 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 →

#993d7f

#51993d · #3d9985

#573d99 · #99573d

Split-complementary

Open in tool →

#853d99 · #993d51

#3d5199 · #993d7f · #99853d

Contrast

#3d9957 as textRatioAAAA largeAAAFix
Aaon white
3.56:1failpassfail
  • AA: use #34834b as the text (4.67:1)
  • AAA: use #276238 as the text (7.27:1)
  • AA: or shift the background to #212121 (4.52:1)
Aaon black
5.89:1passpassfail

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3d9957 as the background.

Brands using this color

mcpConnect your agent — build around #3d9957
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 #3d9957 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d9957-a2bead-bb59d4-1f2d29-ebf1e9?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