Color

#3fab9d

#3fab9d
hex#3fab9d
rgbrgb(63, 171, 157)
hslhsl(172, 46%, 46%)
oklchoklch(0.676 0.1 183.2)
Closest name: Ambrosial Oceanside (#47ae9c)Relative luminance 0.3262

Colors that go with #3fab9d

Charcoal, Copper and Dark Olive Green 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.

Real palettes that use #3fab9d

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#ab3f4e

#3fab67 · #3f84ab

#9d3fab · #ab9d3f

Split-complementary

Open in tool →

#ab3f84 · #ab673f

#673fab · #ab3f4e · #84ab3f

Contrast

#3fab9d as textRatioAAAA largeAAAFix
Aaon white
2.79:1failfailfail
  • AA: use #308277 as the text (4.58:1)
  • AAA: use #246159 as the text (7.17:1)
  • AA: or shift the background to #333333 (4.53:1)
  • AAA: or shift the background to #0a0a0a (7.09:1)
Aaon black
7.52:1passpasspassPasses 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 #3fab9d as the background.

Brands using this color

mcpConnect your agent — build around #3fab9d
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 #3fab9d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fab9d-a2bebe-d459a5-1f292d-e9f1ec?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