Color

#04023c

#04023c
hex#04023c
rgbrgb(4, 2, 60)
hslhsl(242, 94%, 12%)
oklchoklch(0.17 0.106 269.3)
Closest name: Oblivion (#000435)Relative luminance 0.004

Colors that go with #04023c

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 →

#393b02

#021d3b · #21023b

#3b0402 · #023b04

Split-complementary

Open in tool →

#3b2102 · #1d3b02

#3b021d · #393b02 · #023b21

Contrast

#04023c as textRatioAAAA largeAAAFix
Aaon white
19.46:1passpasspassPasses AAA — no fix needed.
Aaon black
1.08:1failfailfail
  • AA: use #6661fa as the text (4.66:1)
  • AAA: use #8c88fb as the text (7.03:1)
  • AA: or shift the background to #7a7a7a (4.53:1)
  • AAA: or shift the background to #9c9c9c (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #04023c as the background.

Brands using this color

Fonts for this mood

#04023c reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #04023c
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 #04023c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/04023c-a29cc4-df9e4e-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