Color

#3dc78b

#3dc78b
hex#3dc78b
rgbrgb(61, 199, 139)
hslhsl(154, 55%, 51%)
oklchoklch(0.741 0.147 160.2)
Closest name: Emerald Green (#50c878)Relative luminance 0.437

Colors that go with #3dc78b

Charcoal, Hot Pink and 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 →

#c73d79

#3dc746 · #3dbec7

#8b3dc7 · #c78b3d

Split-complementary

Open in tool →

#c73dbe · #c7463d

#463dc7 · #c73d79 · #bec73d

Contrast

#3dc78b as textRatioAAAA largeAAAFix
Aaon white
2.16:1failfailfail
  • AA: use #27865d as the text (4.51:1)
  • AAA: use #1d6344 as the text (7.19:1)
  • AA: or shift the background to #424242 (4.66:1)
  • AAA: or shift the background to #262626 (7.02:1)
Aaon black
9.74:1passpasspassPasses 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 #3dc78b 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 #3dc78b
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 #3dc78b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3dc78b-a2beb5-d459ca-1f2d2d-e9f1ea?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