Color

#04409f

#04409f
hex#04409f
rgbrgb(4, 64, 159)
hslhsl(217, 95%, 32%)
oklchoklch(0.404 0.164 260.5)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.062

Colors that go with #04409f

Crimson, Midnight Blue and Royal 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.

Real palettes that use #04409f

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#9f6404

#048d9f · #16049f

#9f0440 · #409f04

Split-complementary

Open in tool →

#9f1604 · #8d9f04

#9f048d · #9f6404 · #049f16

Contrast

#04409f as textRatioAAAA largeAAAFix
Aaon white
9.38:1passpasspassPasses AAA — no fix needed.
Aaon black
2.24:1failfailfail
  • AA: use #156df9 as the text (4.59:1)
  • AAA: use #5695fb as the text (7.09:1)
  • AA: or shift the background to #b5b5b5 (4.57:1)
  • AAA: or shift the background to #e0e0e0 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #04409f as the background.

Brands using this color

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

Fonts for this mood

#04409f reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #04409f
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 #04409f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/04409f-9ca7c4-df624e-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