Color

#09409f

#09409f
hex#09409f
rgbrgb(9, 64, 159)
hslhsl(218, 89%, 33%)
oklchoklch(0.404 0.164 261.1)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0623

Colors that go with #09409f

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 →

#9f6809

#098b9f · #1d099f

#9f0940 · #409f09

Split-complementary

Open in tool →

#9f1d09 · #8b9f09

#9f098b · #9f6809 · #099f1d

Contrast

#09409f as textRatioAAAA largeAAAFix
Aaon white
9.35:1passpasspassPasses AAA — no fix needed.
Aaon black
2.25:1failfailfail
  • AA: use #216ef2 as the text (4.58:1)
  • AAA: use #6097f6 as the text (7.25:1)
  • AA: or shift the background to #b5b5b5 (4.56:1)
  • AAA: or shift the background to #e0e0e0 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #09409f as the background.

Brands using this color

Fonts for this mood

#09409f reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #09409f
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 #09409f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/09409f-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