Color

#04205d

#04205d
hex#04205d
rgbrgb(4, 32, 93)
hslhsl(221, 92%, 19%)
oklchoklch(0.271 0.114 262.4)
Closest name: Black Sea Night (#052462)Relative luminance 0.0185

Colors that go with #04205d

Charcoal, Crimson and Steel 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 →

#5d4104

#044d5d · #14045d

#5d0420 · #205d04

Split-complementary

Open in tool →

#5d1404 · #4d5d04

#5d044d · #5d4104 · #045d14

Contrast

#04205d as textRatioAAAA largeAAAFix
Aaon white
15.33:1passpasspassPasses AAA — no fix needed.
Aaon black
1.37:1failfailfail
  • AA: use #2c6cf6 as the text (4.58:1)
  • AAA: use #6795f9 as the text (7.24:1)
  • AA: or shift the background to #8c8c8c (4.56:1)
  • AAA: or shift the background to #b0b0b0 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #04205d as the background.

Brands using this color

Fonts for this mood

#04205d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #04205d
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 #04205d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/04205d-9ca4c4-df6b4e-211f2d-e9eff1?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