Color

#3eb178

#3eb178
hex#3eb178
rgbrgb(62, 177, 120)
hslhsl(150, 48%, 47%)
oklchoklch(0.681 0.134 157.9)
Closest name: mediumseagreen (#3cb371)Relative luminance 0.3382

Colors that go with #3eb178

Charcoal, Midnight Blue and Mustard Yellow 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 →

#b13e78

#3eb13e · #3eb1b1

#783eb1 · #b1783e

Split-complementary

Open in tool →

#b13eb1 · #b13e3e

#3e3eb1 · #b13e78 · #b1b13e

Contrast

#3eb178 as textRatioAAAA largeAAAFix
Aaon white
2.7:1failfailfail
  • AA: use #2e8459 as the text (4.6:1)
  • AAA: use #226242 as the text (7.26:1)
  • AA: or shift the background to #333333 (4.67:1)
  • AAA: or shift the background to #0f0f0f (7.09:1)
Aaon black
7.76:1passpasspassPasses 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 #3eb178 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 #3eb178
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 #3eb178 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3eb178-a2beb3-d459d2-1f2d2c-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