Color

#399f38

#399f38
hex#399f38
rgbrgb(57, 159, 56)
hslhsl(119, 48%, 42%)
oklchoklch(0.621 0.17 143.1)
Closest name: Grass Is Greener (#3f9b0b)Relative luminance 0.2595

Colors that go with #399f38

Charcoal, Crimson 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 →

#9d389f

#6d9f38 · #389f69

#38399f · #9f3839

Split-complementary

Open in tool →

#69389f · #9f386d

#386d9f · #9d389f · #9f6938

Contrast

#399f38 as textRatioAAAA largeAAAFix
Aaon white
3.39:1failpassfail
  • AA: use #30842e as the text (4.7:1)
  • AAA: use #246222 as the text (7.38:1)
  • AA: or shift the background to #242424 (4.58:1)
Aaon black
6.19:1passpassfail
  • AAA: use #3eaa3c as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #399f38 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

mcpConnect your agent — build around #399f38
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 #399f38 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/399f38-a2bea5-964edf-1f2d25-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