Color

#3bb8de

#3bb8de
hex#3bb8de
rgbrgb(59, 184, 222)
hslhsl(194, 71%, 55%)
oklchoklch(0.731 0.119 222.7)
Closest name: Blue Martini (#52b4d3)Relative luminance 0.4048

Tints & shades

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

Harmonies

Complementary

Open in tool →

#de613b

#3bdeb2 · #3b66de

#de3bb8 · #b8de3b

Split-complementary

Open in tool →

#de3b66 · #deb23b

#b23bde · #de613b · #66de3b

Contrast

#3bb8de as textRatioAAAA largeAAAFix
Aaon white
2.31:1failfailfail
  • AA: use #1b7f9d as the text (4.6:1)
  • AAA: use #145f76 as the text (7.17:1)
  • AA: or shift the background to #3d3d3d (4.71:1)
  • AAA: or shift the background to #1f1f1f (7.14:1)
Aaon black
9.1:1passpasspassPasses 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 #3bb8de 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

#3bb8de reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3bb8de
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 #3bb8de and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3bb8de-9cb6c4-df4e72-1f242d-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