Color

#3fe4ba

#3fe4ba
hex#3fe4ba
rgbrgb(63, 228, 186)
hslhsl(165, 75%, 57%)
oklchoklch(0.826 0.146 171.5)
Closest name: Aquamarine (#2ee8bb)Relative luminance 0.6009

Colors that go with #3fe4ba

Charcoal, Blue and Crimson 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 →

#e43f68

#3fe468 · #3fbae4

#ba3fe4 · #e4ba3f

Split-complementary

Open in tool →

#e43fba · #e4683f

#683fe4 · #e43f68 · #bae43f

Contrast

#3fe4ba as textRatioAAAA largeAAAFix
Aaon white
1.61:1failfailfail
  • AA: use #138669 as the text (4.52:1)
  • AAA: use #0e624d as the text (7.31:1)
  • AA: or shift the background to #545454 (4.69:1)
  • AAA: or shift the background to #383838 (7.27:1)
Aaon black
13.02:1passpasspassPasses 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 #3fe4ba 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 #3fe4ba
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 #3fe4ba and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fe4ba-a2beba-d459b3-1f2b2d-e9f1eb?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