Color

#3cb2fb

#3cb2fb
hex#3cb2fb
rgbrgb(60, 178, 251)
hslhsl(203, 96%, 61%)
oklchoklch(0.731 0.147 240.8)
Closest name: Cerulean (#55aaee)Relative luminance 0.3977

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fb853c

#3cfbe5 · #3c52fb

#fb3cb2 · #b2fb3c

Split-complementary

Open in tool →

#fb3c52 · #fbe53c

#e53cfb · #fb853c · #52fb3c

Contrast

#3cb2fb as textRatioAAAA largeAAAFix
Aaon white
2.35:1failfailfail
  • AA: use #047ac3 as the text (4.59:1)
  • AAA: use #035b91 as the text (7.22:1)
  • AA: or shift the background to #3d3d3d (4.63:1)
  • AAA: or shift the background to #1f1f1f (7.03:1)
Aaon black
8.95:1passpasspassPasses 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 #3cb2fb as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#3cb2fb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3cb2fb
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 #3cb2fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3cb2fb-9cb0c4-df4e5d-1f222d-e9f1f0?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