Color

#398b1d

#398b1d
hex#398b1d
rgbrgb(57, 139, 29)
hslhsl(105, 65%, 33%)
oklchoklch(0.564 0.163 139.3)
Closest name: Forest Green (#228b22)Relative luminance 0.1942

Colors that go with #398b1d

Royal Blue, Charcoal and Crimson 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 →

#6f1d8b

#6f8b1d · #1d8b39

#1d398b · #8b1d39

Split-complementary

Open in tool →

#391d8b · #8b1d6f

#1d6f8b · #6f1d8b · #8b391d

Contrast

#398b1d as textRatioAAAA largeAAAFix
Aaon white
4.3:1failpassfail
  • AA: use #37871d as the text (4.52:1)
  • AAA: use #296515 as the text (7.08:1)
  • AA: or shift the background to #0d0d0d (4.52:1)
Aaon black
4.88:1passpassfail
  • AAA: use #47ad25 as the text (7.27:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #398b1d as the background.

Brands using this color

mcpConnect your agent — build around #398b1d
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 #398b1d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/398b1d-a6bea2-754edf-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