Color

#3bbfb0

#3bbfb0
hex#3bbfb0
rgbrgb(59, 191, 176)
hslhsl(173, 53%, 49%)
oklchoklch(0.731 0.114 184.1)
Closest name: Emerald Bliss (#4cbdac)Relative luminance 0.4133

Colors that go with #3bbfb0

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 →

#bf3b4a

#3bbf6d · #3b8cbf

#b03bbf · #bfb03b

Split-complementary

Open in tool →

#bf3b8c · #bf6d3b

#6d3bbf · #bf3b4a · #8cbf3b

Contrast

#3bbfb0 as textRatioAAAA largeAAAFix
Aaon white
2.27:1failfailfail
  • AA: use #288176 as the text (4.68:1)
  • AAA: use #1e625a as the text (7.12:1)
  • AA: or shift the background to #404040 (4.57:1)
  • AAA: or shift the background to #212121 (7.1:1)
Aaon black
9.27:1passpasspassPasses 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 #3bbfb0 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 #3bbfb0
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 #3bbfb0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3bbfb0-a2bebe-d459a3-1f292d-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