Color

#3da2eb

#3da2eb
hex#3da2eb
rgbrgb(61, 162, 235)
hslhsl(205, 81%, 58%)
oklchoklch(0.687 0.142 244.2)
Closest name: Cerulean (#55aaee)Relative luminance 0.3283

Colors that go with #3da2eb

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 →

#eb853d

#3debdc · #3d4ceb

#eb3da2 · #a2eb3d

Split-complementary

Open in tool →

#eb3d4c · #ebdc3d

#dc3deb · #eb853d · #4ceb3d

Contrast

#3da2eb as textRatioAAAA largeAAAFix
Aaon white
2.78:1failfailfail
  • AA: use #147ac2 as the text (4.57:1)
  • AAA: use #0f5a8f as the text (7.29:1)
  • AA: or shift the background to #333333 (4.55:1)
  • AAA: or shift the background to #0d0d0d (7:1)
Aaon black
7.57:1passpasspassPasses 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 #3da2eb as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#3da2eb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3da2eb
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 #3da2eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3da2eb-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