Color

#55c378

#55c378
hex#55c378
rgbrgb(85, 195, 120)
hslhsl(139, 48%, 55%)
oklchoklch(0.734 0.148 151.5)
Closest name: Emerald Green (#50c878)Relative luminance 0.4232

Colors that go with #55c378

Charcoal, Blue and Cornflower Blue 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 →

#c355a0

#69c355 · #55c3af

#7855c3 · #c37855

Split-complementary

Open in tool →

#af55c3 · #c35569

#5569c3 · #c355a0 · #c3af55

Contrast

#55c378 as textRatioAAAA largeAAAFix
Aaon white
2.22:1failfailfail
  • AA: use #2e844a as the text (4.65:1)
  • AAA: use #226237 as the text (7.32:1)
  • AA: or shift the background to #424242 (4.53:1)
  • AAA: or shift the background to #212121 (7.26:1)
Aaon black
9.46:1passpasspassPasses 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 #55c378 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 #55c378
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 #55c378 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/55c378-a2beae-c059d4-1f2d2a-ebf1e9?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