Color

#3faefd

#3faefd
hex#3faefd
rgbrgb(63, 174, 253)
hslhsl(205, 98%, 62%)
oklchoklch(0.724 0.151 244)
Closest name: Cerulean (#55aaee)Relative luminance 0.3842

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fd8e3f

#3ffded · #3f4ffd

#fd3fae · #aefd3f

Split-complementary

Open in tool →

#fd3f4f · #fded3f

#ed3ffd · #fd8e3f · #4ffd3f

Contrast

#3faefd as textRatioAAAA largeAAAFix
Aaon white
2.42:1failfailfail
  • AA: use #0277ca as the text (4.67:1)
  • AAA: use #025997 as the text (7.3:1)
  • AA: or shift the background to #3b3b3b (4.63:1)
  • AAA: or shift the background to #1c1c1c (7.05:1)
Aaon black
8.68:1passpasspassPasses 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 #3faefd as the background.

Brands using this color

Palettes built around it

Fonts for this mood

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

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

tool url/palettes/new/3faefd-9cafc4-df4e58-1f212d-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