Color

#3daefa

#3daefa
hex#3daefa
rgbrgb(61, 174, 250)
hslhsl(204, 95%, 61%)
oklchoklch(0.722 0.149 242.8)
Closest name: Cerulean (#55aaee)Relative luminance 0.3817

Colors that go with #3daefa

Charcoal, Dark Orange 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 →

#fa893d

#3dfae7 · #3d50fa

#fa3dae · #aefa3d

Split-complementary

Open in tool →

#fa3d50 · #fae73d

#e73dfa · #fa893d · #50fa3d

Contrast

#3daefa as textRatioAAAA largeAAAFix
Aaon white
2.43:1failfailfail
  • AA: use #0579c7 as the text (4.6:1)
  • AAA: use #045b95 as the text (7.15:1)
  • AA: or shift the background to #3b3b3b (4.61:1)
  • AAA: or shift the background to #1c1c1c (7.01:1)
Aaon black
8.63:1passpasspassPasses 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 #3daefa as the background.

Brands using this color

Palettes built around it

Fonts for this mood

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

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

tool url/palettes/new/3daefa-9cafc4-df4e5a-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