Color

#188b2a

#188b2a
hex#188b2a
rgbrgb(24, 139, 42)
hslhsl(129, 71%, 32%)
oklchoklch(0.557 0.166 144.8)
Closest name: Forest Green (#228b22)Relative luminance 0.1883

Colors that go with #188b2a

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 →

#8c187a

#408c18 · #188c63

#29188c · #8c2918

Split-complementary

Open in tool →

#63188c · #8c1840

#18408c · #8c187a · #8c6318

Contrast

#188b2a as textRatioAAAA largeAAAFix
Aaon white
4.41:1failpassfail
  • AA: use #178728 as the text (4.63:1)
  • AAA: use #11641e as the text (7.33:1)
  • AA: or shift the background to #080808 (4.54:1)
Aaon black
4.77:1passpassfail
  • AAA: use #1eae33 as the text (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #188b2a as the background.

Brands using this color

mcpConnect your agent — build around #188b2a
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 #188b2a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/188b2a-a2bea9-ae4edf-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