Color

#040e9f

#040e9f
hex#040e9f
rgbrgb(4, 14, 159)
hslhsl(236, 95%, 32%)
oklchoklch(0.328 0.213 264.9)
Closest name: Cobalt (#030aa7)Relative luminance 0.0284

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9f9504

#045c9f · #47049f

#9f040e · #0e9f04

Split-complementary

Open in tool →

#9f4704 · #5c9f04

#9f045c · #9f9504 · #049f47

Contrast

#040e9f as textRatioAAAA largeAAAFix
Aaon white
13.39:1passpasspassPasses AAA — no fix needed.
Aaon black
1.57:1failfailfail
  • AA: use #5b66fb as the text (4.74:1)
  • AAA: use #838bfc as the text (7.06:1)
  • AA: or shift the background to #969696 (4.53:1)
  • AAA: or shift the background to #bdbdbd (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #040e9f 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

#040e9f reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040e9f
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 #040e9f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040e9f-9e9cc4-df8f4e-241f2d-e9eef1?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