Color

#3bc0de

#3bc0de
hex#3bc0de
rgbrgb(59, 192, 222)
hslhsl(191, 71%, 55%)
oklchoklch(0.75 0.119 216.5)
Closest name: Blue Martini (#52b4d3)Relative luminance 0.439

Colors that go with #3bc0de

Charcoal, Dark Orange and Midnight 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 →

#de593b

#3bdeaa · #3b6ede

#de3bc0 · #c0de3b

Split-complementary

Open in tool →

#de3b6e · #deaa3b

#aa3bde · #de593b · #6ede3b

Contrast

#3bc0de as textRatioAAAA largeAAAFix
Aaon white
2.15:1failfailfail
  • AA: use #1a8199 as the text (4.52:1)
  • AAA: use #136071 as the text (7.14:1)
  • AA: or shift the background to #424242 (4.68:1)
  • AAA: or shift the background to #262626 (7.05:1)
Aaon black
9.78:1passpasspassPasses 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 #3bc0de as the background.

Brands using this color

Fonts for this mood

#3bc0de reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3bc0de
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 #3bc0de and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3bc0de-a2b6be-df4e7a-1f252d-e9f1ef?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