Color

#034ac4

#034ac4
hex#034ac4
rgbrgb(3, 74, 196)
hslhsl(218, 97%, 39%)
oklchoklch(0.458 0.2 261.5)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.089

Colors that go with #034ac4

Charcoal, Crimson and Steel 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 →

#c47d03

#03aac4 · #1d03c4

#c4034a · #4ac403

Split-complementary

Open in tool →

#c41d03 · #aac403

#c403aa · #c47d03 · #03c41d

Contrast

#034ac4 as textRatioAAAA largeAAAFix
Aaon white
7.55:1passpasspassPasses AAA — no fix needed.
Aaon black
2.78:1failfailfail
  • AA: use #186bfb as the text (4.53:1)
  • AAA: use #5995fc as the text (7.13:1)
  • AA: or shift the background to #c9c9c9 (4.56:1)
  • AAA: or shift the background to #f7f7f7 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #034ac4 as the background.

Brands using this color

Fonts for this mood

#034ac4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #034ac4
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 #034ac4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/034ac4-9ca6c4-df644e-201f2d-e9f0f1?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