Color

#3faae4

#3faae4
hex#3faae4
rgbrgb(63, 170, 228)
hslhsl(201, 75%, 57%)
oklchoklch(0.702 0.128 236.7)
Closest name: Cerulean (#55aaee)Relative luminance 0.3541

Colors that go with #3faae4

Charcoal, Peru and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e4793f

#3fe4cb · #3f58e4

#e43faa · #aae43f

Split-complementary

Open in tool →

#e43f58 · #e4cb3f

#cb3fe4 · #e4793f · #58e43f

Contrast

#3faae4 as textRatioAAAA largeAAAFix
Aaon white
2.6:1failfailfail
  • AA: use #197db3 as the text (4.54:1)
  • AAA: use #135e86 as the text (7.06:1)
  • AA: or shift the background to #383838 (4.51:1)
  • AAA: or shift the background to #141414 (7.09:1)
Aaon black
8.08:1passpasspassPasses 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 #3faae4 as the background.

Brands using this color

Fonts for this mood

#3faae4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3faae4
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3faae4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3faae4-9cb1c4-df4e62-1f222d-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