Color

#397f40

#397f40
hex#397f40
rgbrgb(57, 127, 64)
hslhsl(126, 38%, 36%)
oklchoklch(0.535 0.119 145.6)
Closest name: Bold Irish (#2a814d)Relative luminance 0.1642

Colors that go with #397f40

Charcoal, Dark Orchid and Copper 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 →

#7f3978

#557f39 · #397f63

#40397f · #7f4039

Split-complementary

Open in tool →

#63397f · #7f3955

#39557f · #7f3978 · #7f6339

Contrast

#397f40 as textRatioAAAA largeAAAFix
Aaon white
4.9:1passpassfail
  • AAA: use #2c6332 as the text (7.15:1)
Aaon black
4.28:1failpassfail
  • AA: use #3c8643 as the text (4.68:1)
  • AAA: use #4ca955 as the text (7.11:1)
  • AA: or shift the background to #f7f7f7 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #397f40 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 #397f40
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 #397f40 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/397f40-a2bea8-a74edf-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