Color

#3f9243

#3f9243
hex#3f9243
rgbrgb(63, 146, 67)
hslhsl(123, 40%, 41%)
oklchoklch(0.59 0.14 144.4)
Closest name: Fern (#548d44)Relative luminance 0.2202

Colors that go with #3f9243

Charcoal, Royal Blue and Blue 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 →

#923f8e

#64923f · #3f926d

#433f92 · #92433f

Split-complementary

Open in tool →

#6d3f92 · #923f64

#3f6492 · #923f8e · #926d3f

Contrast

#3f9243 as textRatioAAAA largeAAAFix
Aaon white
3.89:1failpassfail
  • AA: use #39843c as the text (4.63:1)
  • AAA: use #2b642e as the text (7.08:1)
  • AA: or shift the background to #171717 (4.61:1)
Aaon black
5.4:1passpassfail
  • AAA: use #49ab4e as the text (7.22:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f9243 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 #3f9243
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 #3f9243 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f9243-a2bea6-a04edf-1f2d26-edf1e9?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