Color

#3acbbc

#3acbbc
hex#3acbbc
rgbrgb(58, 203, 188)
hslhsl(174, 58%, 51%)
oklchoklch(0.764 0.121 184.8)
Closest name: Cockatoo (#58c8b6)Relative luminance 0.4724

Colors that go with #3acbbc

Charcoal, Crimson and Dodger 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 →

#cb3a48

#3acb74 · #3a91cb

#bc3acb · #cbbc3a

Split-complementary

Open in tool →

#cb3a91 · #cb743a

#743acb · #cb3a48 · #91cb3a

Contrast

#3acbbc as textRatioAAAA largeAAAFix
Aaon white
2.01:1failfailfail
  • AA: use #228177 as the text (4.69:1)
  • AAA: use #1a615a as the text (7.24:1)
  • AA: or shift the background to #474747 (4.62:1)
  • AAA: or shift the background to #2b2b2b (7.04:1)
Aaon black
10.45:1passpasspassPasses 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 #3acbbc 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 #3acbbc
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 #3acbbc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3acbbc-a2bebe-d459a1-1f292d-e9f1ed?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