Color

#397728

#397728
hex#397728
rgbrgb(57, 119, 40)
hslhsl(107, 50%, 31%)
oklchoklch(0.51 0.13 139.5)
Closest name: Forest Empress (#3d7016)Relative luminance 0.1422

Colors that go with #397728

Charcoal, Crimson 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 →

#652877

#607728 · #28773e

#283977 · #772839

Split-complementary

Open in tool →

#3e2877 · #772860

#286077 · #652877 · #773e28

Contrast

#397728 as textRatioAAAA largeAAAFix
Aaon white
5.46:1passpassfail
  • AAA: use #306321 as the text (7.16:1)
Aaon black
3.84:1failpassfail
  • AA: use #40862d as the text (4.67:1)
  • AAA: use #52ac39 as the text (7.32:1)
  • AA: or shift the background to #ebebeb (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 #397728 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 #397728
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 #397728 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/397728-a5bea2-7a4edf-1f2d22-eff1e9?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