Color

#397440

#397440
hex#397440
rgbrgb(57, 116, 64)
hslhsl(127, 34%, 34%)
oklchoklch(0.505 0.102 146.4)
Closest name: Cucumber Queen (#3c773c)Relative luminance 0.1373

Colors that go with #397440

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 →

#74396d

#507439 · #39745e

#403974 · #744039

Split-complementary

Open in tool →

#5e3974 · #743950

#395074 · #74396d · #745e39

Contrast

#397440 as textRatioAAAA largeAAAFix
Aaon white
5.61:1passpassfail
  • AAA: use #316337 as the text (7.07:1)
Aaon black
3.75:1failpassfail
  • AA: use #408248 as the text (4.5:1)
  • AAA: use #52a75c as the text (7.04:1)
  • AA: or shift the background to #e8e8e8 (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 #397440 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 #397440
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 #397440 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/397440-a2bea8-aa4edf-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