Color

#3fbcde

#3fbcde
hex#3fbcde
rgbrgb(63, 188, 222)
hslhsl(193, 71%, 56%)
oklchoklch(0.741 0.117 219.9)
Closest name: Blue Martini (#52b4d3)Relative luminance 0.423

Tints & shades

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

Harmonies

Complementary

Open in tool →

#de623f

#3fdeb1 · #3f6cde

#de3fbc · #bcde3f

Split-complementary

Open in tool →

#de3f6c · #deb13f

#b13fde · #de623f · #6cde3f

Contrast

#3fbcde as textRatioAAAA largeAAAFix
Aaon white
2.22:1failfailfail
  • AA: use #1a7d99 as the text (4.73:1)
  • AAA: use #135d71 as the text (7.42:1)
  • AA: or shift the background to #424242 (4.53:1)
  • AAA: or shift the background to #212121 (7.25:1)
Aaon black
9.46:1passpasspassPasses 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 #3fbcde 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

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

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

tool url/palettes/new/3fbcde-a2b5be-df4e75-1f242d-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