Color

#31891f

#31891f
hex#31891f
rgbrgb(49, 137, 31)
hslhsl(110, 63%, 33%)
oklchoklch(0.556 0.163 140.7)
Closest name: Forest Green (#228b22)Relative luminance 0.1864

Colors that go with #31891f

Charcoal, Royal 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 →

#771f89

#66891f · #1f8942

#1f3189 · #891f31

Split-complementary

Open in tool →

#421f89 · #891f66

#1f6689 · #771f89 · #89421f

Contrast

#31891f as textRatioAAAA largeAAAFix
Aaon white
4.44:1failpassfail
  • AA: use #2f851e as the text (4.67:1)
  • AAA: use #236417 as the text (7.22:1)
  • AA: or shift the background to #080808 (4.51:1)
Aaon black
4.73:1passpassfail
  • AAA: use #3eaf28 as the text (7.37:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #31891f as the background.

Brands using this color

mcpConnect your agent — build around #31891f
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 #31891f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/31891f-a3bea2-814edf-1f2d23-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