Color

#04003d

#04003d
hex#04003d
rgbrgb(4, 0, 61)
hslhsl(244, 100%, 12%)
oklchoklch(0.167 0.11 269.3)
Closest name: Endless Galaxy (#000044)Relative luminance 0.0036

Colors that go with #04003d

Blue Violet, Charcoal and Crimson 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 →

#393d00

#001b3d · #23003d

#3d0400 · #003d04

Split-complementary

Open in tool →

#3d2300 · #1b3d00

#3d001b · #393d00 · #003d23

Contrast

#04003d as textRatioAAAA largeAAAFix
Aaon white
19.58:1passpasspassPasses AAA — no fix needed.
Aaon black
1.07:1failfailfail
  • AA: use #675cff as the text (4.55:1)
  • AAA: use #928aff as the text (7.3:1)
  • AA: or shift the background to #7a7a7a (4.56:1)
  • AAA: or shift the background to #9c9c9c (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 #04003d 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

#04003d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #04003d
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 #04003d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/04003d-a39cc4-dfa24e-261f2d-e9edf1?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