Color

#3fb7de

#3fb7de
hex#3fb7de
rgbrgb(63, 183, 222)
hslhsl(195, 71%, 56%)
oklchoklch(0.73 0.118 223.9)
Closest name: Blue Martini (#52b4d3)Relative luminance 0.402

Tints & shades

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

Harmonies

Complementary

Open in tool →

#de673f

#3fdeb7 · #3f67de

#de3fb7 · #b7de3f

Split-complementary

Open in tool →

#de3f67 · #deb73f

#b73fde · #de673f · #67de3f

Contrast

#3fb7de as textRatioAAAA largeAAAFix
Aaon white
2.32:1failfailfail
  • AA: use #1b80a1 as the text (4.52:1)
  • AAA: use #145d76 as the text (7.35:1)
  • AA: or shift the background to #3d3d3d (4.68:1)
  • AAA: or shift the background to #1f1f1f (7.1:1)
Aaon black
9.04:1passpasspassPasses 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 #3fb7de 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

#3fb7de reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3fb7de
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 #3fb7de and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fb7de-9cb5c4-df4e70-1f242d-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