Color

#138b29

#138b29
hex#138b29
rgbrgb(19, 139, 41)
hslhsl(131, 76%, 31%)
oklchoklch(0.556 0.168 145)
Closest name: Forest Green (#228b22)Relative luminance 0.1876

Colors that go with #138b29

Charcoal, Royal Blue 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 →

#8b1375

#398b13 · #138b65

#29138b · #8b2913

Split-complementary

Open in tool →

#65138b · #8b1339

#13398b · #8b1375 · #8b6513

Contrast

#138b29 as textRatioAAAA largeAAAFix
Aaon white
4.42:1failpassfail
  • AA: use #128728 as the text (4.64:1)
  • AAA: use #0e671e as the text (7.05:1)
  • AA: or shift the background to #080808 (4.53:1)
Aaon black
4.75:1passpassfail
  • AAA: use #18af34 as the text (7.22:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #138b29 as the background.

Brands using this color

mcpConnect your agent — build around #138b29
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 #138b29 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/138b29-a2beaa-b34edf-1f2d28-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