Color

#040c81

#040c81
hex#040c81
rgbrgb(4, 12, 129)
hslhsl(236, 94%, 26%)
oklchoklch(0.284 0.181 265.3)
Closest name: navy (#000080)Relative luminance 0.0187

Tints & shades

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

Harmonies

Complementary

Open in tool →

#817804

#044b81 · #3a0481

#81040c · #0c8104

Split-complementary

Open in tool →

#813a04 · #4b8104

#81044b · #817804 · #04813a

Contrast

#040c81 as textRatioAAAA largeAAAFix
Aaon white
15.28:1passpasspassPasses AAA — no fix needed.
Aaon black
1.37:1failfailfail
  • AA: use #5762fa as the text (4.53:1)
  • AAA: use #838bfb as the text (7.05:1)
  • AA: or shift the background to #8c8c8c (4.54:1)
  • AAA: or shift the background to #b0b0b0 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #040c81 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

#040c81 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040c81
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 #040c81 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040c81-9e9cc4-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