Color

#3bbdde

#3bbdde
hex#3bbdde
rgbrgb(59, 189, 222)
hslhsl(192, 71%, 55%)
oklchoklch(0.743 0.119 218.8)
Closest name: Blue Martini (#52b4d3)Relative luminance 0.426

Tints & shades

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

Harmonies

Complementary

Open in tool →

#de5b3b

#3bdead · #3b6cde

#de3bbd · #bdde3b

Split-complementary

Open in tool →

#de3b6c · #dead3b

#ad3bde · #de5b3b · #6cde3b

Contrast

#3bbdde as textRatioAAAA largeAAAFix
Aaon white
2.21:1failfailfail
  • AA: use #1a7f99 as the text (4.63:1)
  • AAA: use #135f71 as the text (7.23:1)
  • AA: or shift the background to #424242 (4.56:1)
  • AAA: or shift the background to #242424 (7.04:1)
Aaon black
9.52:1passpasspassPasses 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 #3bbdde 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

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

mcpConnect your agent — build around #3bbdde
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3bbdde and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3bbdde-a2b5be-df4e77-1f242d-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