Color

#399347

#399347
hex#399347
rgbrgb(57, 147, 71)
hslhsl(129, 44%, 40%)
oklchoklch(0.591 0.141 146.4)
Closest name: Fern (#548d44)Relative luminance 0.2219

Colors that go with #399347

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 →

#933985

#599339 · #399373

#473993 · #934739

Split-complementary

Open in tool →

#733993 · #933959

#395993 · #933985 · #937339

Contrast

#399347 as textRatioAAAA largeAAAFix
Aaon white
3.86:1failpassfail
  • AA: use #338440 as the text (4.65:1)
  • AAA: use #276330 as the text (7.21:1)
  • AA: or shift the background to #1a1a1a (4.51:1)
Aaon black
5.44:1passpassfail
  • AAA: use #42a951 as the text (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #399347 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 #399347
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 #399347 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/399347-a2bea9-ae4edf-1f2d27-ecf1e9?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