Color

#55b139

#55b139
hex#55b139
rgbrgb(85, 177, 57)
hslhsl(106, 51%, 46%)
oklchoklch(0.679 0.179 139.3)
Closest name: Extra Life (#6ab417)Relative luminance 0.3367

Colors that go with #55b139

Charcoal, Royal Blue and Taupe 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 →

#9539b1

#91b139 · #39b159

#3955b1 · #b13955

Split-complementary

Open in tool →

#5939b1 · #b13991

#3991b1 · #9539b1 · #b15939

Contrast

#55b139 as textRatioAAAA largeAAAFix
Aaon white
2.72:1failfailfail
  • AA: use #3f832a as the text (4.68:1)
  • AAA: use #306420 as the text (7.07:1)
  • AA: or shift the background to #333333 (4.65:1)
  • AAA: or shift the background to #0f0f0f (7.06:1)
Aaon black
7.73:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #55b139 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 #55b139
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 #55b139 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/55b139-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