Color

#3f8023

#3f8023
hex#3f8023
rgbrgb(63, 128, 35)
hslhsl(102, 57%, 32%)
oklchoklch(0.537 0.142 137.9)
Closest name: Overgrown Mausoleum (#448833)Relative luminance 0.1662

Colors that go with #3f8023

Charcoal, Crimson and Royal 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 →

#642380

#6e8023 · #238036

#233f80 · #80233f

Split-complementary

Open in tool →

#362380 · #80236e

#236e80 · #642380 · #803623

Contrast

#3f8023 as textRatioAAAA largeAAAFix
Aaon white
4.86:1passpassfail
  • AAA: use #31641b as the text (7.07:1)
Aaon black
4.32:1failpassfail
  • AA: use #418424 as the text (4.55:1)
  • AAA: use #53a82e as the text (7.01:1)
  • AA: or shift the background to #f7f7f7 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f8023 as the background.

Brands using this color

mcpConnect your agent — build around #3f8023
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 #3f8023 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f8023-a7bea2-6e4edf-1f2d21-eff1e9?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