Color

#040d86

#040d86
hex#040d86
rgbrgb(4, 13, 134)
hslhsl(236, 94%, 27%)
oklchoklch(0.292 0.186 265.2)
Closest name: darkblue (#00008b)Relative luminance 0.0203

Tints & shades

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

Harmonies

Complementary

Open in tool →

#867d04

#044d86 · #3c0486

#86040d · #0d8604

Split-complementary

Open in tool →

#863c04 · #4d8604

#86044d · #867d04 · #04863c

Contrast

#040d86 as textRatioAAAA largeAAAFix
Aaon white
14.93:1passpasspassPasses AAA — no fix needed.
Aaon black
1.41:1failfailfail
  • AA: use #5762fa as the text (4.53:1)
  • AAA: use #838bfb as the text (7.05:1)
  • AA: or shift the background to #8f8f8f (4.62:1)
  • AAA: or shift the background to #b3b3b3 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #040d86 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

#040d86 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040d86
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 #040d86 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040d86-9e9cc4-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