Color

#040d71

#040d71
hex#040d71
rgbrgb(4, 13, 113)
hslhsl(235, 93%, 23%)
oklchoklch(0.263 0.161 265.6)
Closest name: Deep Blue (#040273)Relative luminance 0.0151

Tints & shades

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

Harmonies

Complementary

Open in tool →

#716804

#044471 · #320471

#71040d · #0d7104

Split-complementary

Open in tool →

#713204 · #447104

#710444 · #716804 · #047132

Contrast

#040d71 as textRatioAAAA largeAAAFix
Aaon white
16.14:1passpasspassPasses AAA — no fix needed.
Aaon black
1.3:1failfailfail
  • AA: use #5865f9 as the text (4.64:1)
  • AAA: use #848efb as the text (7.24:1)
  • AA: or shift the background to #8a8a8a (4.68:1)
  • AAA: or shift the background to #ababab (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #040d71 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

#040d71 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040d71
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 #040d71 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040d71-9e9cc4-df8d4e-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