Color

#3bb2de

#3bb2de
hex#3bb2de
rgbrgb(59, 178, 222)
hslhsl(196, 71%, 55%)
oklchoklch(0.717 0.121 227.2)
Closest name: Blue Martini (#52b4d3)Relative luminance 0.3804

Colors that go with #3bb2de

Charcoal, Midnight Blue and Taupe 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 #3bb2de

Tints & shades

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

Harmonies

Complementary

Open in tool →

#de663b

#3bdeb8 · #3b61de

#de3bb2 · #b2de3b

Split-complementary

Open in tool →

#de3b61 · #deb83b

#b83bde · #de663b · #61de3b

Contrast

#3bb2de as textRatioAAAA largeAAAFix
Aaon white
2.44:1failfailfail
  • AA: use #1b7ea1 as the text (4.62:1)
  • AAA: use #155f7a as the text (7.12:1)
  • AA: or shift the background to #3b3b3b (4.59:1)
  • AAA: or shift the background to #1a1a1a (7.13:1)
Aaon black
8.61:1passpasspassPasses 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 #3bb2de as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#3bb2de reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3bb2de
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 #3bb2de and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3bb2de-9cb5c4-df4e6e-1f232d-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