Color

#398e1f

#398e1f
hex#398e1f
rgbrgb(57, 142, 31)
hslhsl(106, 64%, 34%)
oklchoklch(0.573 0.165 139.6)
Closest name: Forest Green (#228b22)Relative luminance 0.2031

Colors that go with #398e1f

Crimson, Royal Blue and Charcoal 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 →

#741f8e

#718e1f · #1f8e3d

#1f398e · #8e1f39

Split-complementary

Open in tool →

#3d1f8e · #8e1f71

#1f718e · #741f8e · #8e3d1f

Contrast

#398e1f as textRatioAAAA largeAAAFix
Aaon white
4.15:1failpassfail
  • AA: use #36861d as the text (4.58:1)
  • AAA: use #286416 as the text (7.18:1)
  • AA: or shift the background to #121212 (4.52:1)
Aaon black
5.06:1passpassfail
  • AAA: use #45ab26 as the text (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #398e1f 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 #398e1f
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 #398e1f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/398e1f-a5bea2-774edf-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