Color

#034cba

#034cba
hex#034cba
rgbrgb(3, 76, 186)
hslhsl(216, 97%, 37%)
oklchoklch(0.452 0.185 260.3)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0873

Colors that go with #034cba

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 →

#ba7103

#03a8ba · #1503ba

#ba034c · #4cba03

Split-complementary

Open in tool →

#ba1503 · #a8ba03

#ba03a8 · #ba7103 · #03ba15

Contrast

#034cba as textRatioAAAA largeAAAFix
Aaon white
7.65:1passpasspassPasses AAA — no fix needed.
Aaon black
2.75:1failfailfail
  • AA: use #0e6dfb as the text (4.6:1)
  • AAA: use #5497fc as the text (7.21:1)
  • AA: or shift the background to #c7c7c7 (4.52:1)
  • AAA: or shift the background to #f5f5f5 (7.01:1)

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

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/034cba-9ca7c4-df5f4e-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