Color

#3dabfa

#3dabfa
hex#3dabfa
rgbrgb(61, 171, 250)
hslhsl(205, 95%, 61%)
oklchoklch(0.715 0.151 244.3)
Closest name: Cerulean (#55aaee)Relative luminance 0.3702

Colors that go with #3dabfa

Charcoal, Amber and Blue 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 →

#fa8c3d

#3dfaea · #3d4dfa

#fa3dab · #abfa3d

Split-complementary

Open in tool →

#fa3d4d · #faea3d

#ea3dfa · #fa8c3d · #4dfa3d

Contrast

#3dabfa as textRatioAAAA largeAAAFix
Aaon white
2.5:1failfailfail
  • AA: use #0579cc as the text (4.55:1)
  • AAA: use #045995 as the text (7.32:1)
  • AA: or shift the background to #383838 (4.69:1)
  • AAA: or shift the background to #171717 (7.17:1)
Aaon black
8.4:1passpasspassPasses 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 #3dabfa as the background.

Brands using this color

Palettes built around it

Fonts for this mood

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

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

tool url/palettes/new/3dabfa-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