Color

#3bb0de

#3bb0de
hex#3bb0de
rgbrgb(59, 176, 222)
hslhsl(197, 71%, 55%)
oklchoklch(0.712 0.121 228.7)
Closest name: Cousteau (#55a9d6)Relative luminance 0.3725

Tints & shades

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

Harmonies

Complementary

Open in tool →

#de693b

#3bdeba · #3b5ede

#de3bb0 · #b0de3b

Split-complementary

Open in tool →

#de3b5e · #deba3b

#ba3bde · #de693b · #5ede3b

Contrast

#3bb0de as textRatioAAAA largeAAAFix
Aaon white
2.48:1failfailfail
  • AA: use #1c7fa6 as the text (4.53:1)
  • AAA: use #155d7a as the text (7.3:1)
  • AA: or shift the background to #3b3b3b (4.51:1)
  • AAA: or shift the background to #1a1a1a (7:1)
Aaon black
8.45:1passpasspassPasses 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 #3bb0de 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

#3bb0de reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3bb0de
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 #3bb0de and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3bb0de-9cb4c4-df4e6b-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