Color

#3c900e

#3c900e
hex#3c900e
rgbrgb(60, 144, 14)
hslhsl(99, 82%, 31%)
oklchoklch(0.578 0.174 138.1)
Closest name: Emerald (#028f1e)Relative luminance 0.2094

Colors that go with #3c900e

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 →

#620e90

#7c900e · #0e9022

#0e3c90 · #900e3c

Split-complementary

Open in tool →

#220e90 · #900e7c

#0e7c90 · #620e90 · #90220e

Contrast

#3c900e as textRatioAAAA largeAAAFix
Aaon white
4.05:1failpassfail
  • AA: use #38870d as the text (4.53:1)
  • AAA: use #28610a as the text (7.49:1)
  • AA: or shift the background to #141414 (4.55:1)
Aaon black
5.19:1passpassfail
  • AAA: use #47ac11 as the text (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3c900e 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 #3c900e
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 #3c900e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3c900e-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