Color

#040d77

#040d77
hex#040d77
rgbrgb(4, 13, 119)
hslhsl(235, 93%, 24%)
oklchoklch(0.271 0.169 265.5)
Closest name: Deep Blue (#040273)Relative luminance 0.0165

Colors that go with #040d77

Charcoal, Steel Blue and Cobalt Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#766d04

#044776 · #340476

#76040e · #0e7604

Split-complementary

Open in tool →

#763404 · #477604

#760447 · #766d04 · #047634

Contrast

#040d77 as textRatioAAAA largeAAAFix
Aaon white
15.8:1passpasspassPasses AAA — no fix needed.
Aaon black
1.33:1failfailfail
  • 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 (4.58:1)
  • AAA: or shift the background to #adadad (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 #040d77 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

#040d77 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040d77
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

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

analyze #040d77 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040d77-9e9cc4-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