Color

#04099f

#04099f
hex#04099f
rgbrgb(4, 9, 159)
hslhsl(238, 95%, 32%)
oklchoklch(0.324 0.215 264.9)
Closest name: Cobalt (#030aa7)Relative luminance 0.0272

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9f9a04

#04579f · #4c049f

#9f0409 · #099f04

Split-complementary

Open in tool →

#9f4c04 · #579f04

#9f0457 · #9f9a04 · #049f4c

Contrast

#04099f as textRatioAAAA largeAAAFix
Aaon white
13.59:1passpasspassPasses AAA — no fix needed.
Aaon black
1.54:1failfailfail
  • AA: use #5b60fb as the text (4.51:1)
  • AAA: use #888cfc as the text (7.2:1)
  • AA: or shift the background to #969696 (4.6:1)
  • AAA: or shift the background to #bababa (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #04099f 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

#04099f reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #04099f
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #04099f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/04099f-9f9cc4-df944e-251f2d-e9edf1?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