Color

#397f4c

#397f4c
hex#397f4c
rgbrgb(57, 127, 76)
hslhsl(136, 38%, 36%)
oklchoklch(0.538 0.106 150.3)
Closest name: Bold Irish (#2a814d)Relative luminance 0.1657

Colors that go with #397f4c

Charcoal, Royal Blue and Medium Violet Red 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 →

#7f396c

#497f39 · #397f6e

#4c397f · #7f4c39

Split-complementary

Open in tool →

#6e397f · #7f3949

#39497f · #7f396c · #7f6e39

Contrast

#397f4c as textRatioAAAA largeAAAFix
Aaon white
4.87:1passpassfail
  • AAA: use #2c633b as the text (7.11:1)
Aaon black
4.31:1failpassfail
  • AA: use #3c8650 as the text (4.72:1)
  • AAA: use #4ca965 as the text (7.17:1)
  • AA: or shift the background to #f7f7f7 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #397f4c as the background.

Brands using this color

mcpConnect your agent — build around #397f4c
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 #397f4c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/397f4c-a2bead-b959d4-1f2d29-ebf1e9?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