Color

#31901d

#31901d
hex#31901d
rgbrgb(49, 144, 29)
hslhsl(110, 66%, 34%)
oklchoklch(0.575 0.172 140.7)
Closest name: Emerald (#028f1e)Relative luminance 0.2069

Colors that go with #31901d

Crimson, Royal Blue and Charcoal 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 →

#7d1d90

#6a901d · #1d9044

#1d3190 · #901d31

Split-complementary

Open in tool →

#441d90 · #901d6a

#1d6a90 · #7d1d90 · #90441d

Contrast

#31901d as textRatioAAAA largeAAAFix
Aaon white
4.09:1failpassfail
  • AA: use #2e871c as the text (4.57:1)
  • AAA: use #226615 as the text (7.05:1)
  • AA: or shift the background to #141414 (4.51:1)
Aaon black
5.14:1passpassfail
  • AAA: use #3bae24 as the text (7.27:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #31901d 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 #31901d
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 #31901d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/31901d-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