Color

#3b910d

#3b910d
hex#3b910d
rgbrgb(59, 145, 13)
hslhsl(99, 84%, 31%)
oklchoklch(0.581 0.176 138.3)
Closest name: Emerald (#028f1e)Relative luminance 0.2121

Colors that go with #3b910d

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 →

#630d91

#7e910d · #0d9121

#0d3b91 · #910d3b

Split-complementary

Open in tool →

#210d91 · #910d7e

#0d7e91 · #630d91 · #91210d

Contrast

#3b910d as textRatioAAAA largeAAAFix
Aaon white
4.01:1failpassfail
  • AA: use #35830b as the text (4.77:1)
  • AAA: use #286309 as the text (7.29:1)
  • AA: or shift the background to #141414 (4.6:1)
Aaon black
5.24:1passpassfail
  • AAA: use #47ae0f as the text (7.33:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3b910d 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 #3b910d
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 #3b910d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3b910d-a8bea2-664edf-1f2d21-f0f1e9?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