Color

#3f783a

#3f783a
hex#3f783a
rgbrgb(63, 120, 58)
hslhsl(115, 35%, 35%)
oklchoklch(0.518 0.111 142.2)
Closest name: Cucumber Queen (#3c773c)Relative luminance 0.148

Colors that go with #3f783a

Charcoal, Rust and Dark Orchid 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 →

#733a78

#5e783a · #3a7854

#3a3f78 · #783a3f

Split-complementary

Open in tool →

#543a78 · #783a5e

#3a5e78 · #733a78 · #78543a

Contrast

#3f783a as textRatioAAAA largeAAAFix
Aaon white
5.3:1passpassfail
  • AAA: use #33602e as the text (7.36:1)
Aaon black
3.96:1failpassfail
  • AA: use #45833f as the text (4.57:1)
  • AAA: use #59a951 as the text (7.22:1)
  • AA: or shift the background to #ededed (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 #3f783a 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 #3f783a
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 #3f783a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f783a-a2bea3-8d4edf-1f2d24-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