Color

#0c286e

#0c286e
hex#0c286e
rgbrgb(12, 40, 110)
hslhsl(223, 80%, 24%)
oklchoklch(0.308 0.126 263.8)
Closest name: Black Sea Night (#052462)Relative luminance 0.0272

Colors that go with #0c286e

Charcoal, Steel Blue and 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 →

#6e520c

#0c596e · #210c6e

#6e0c28 · #286e0c

Split-complementary

Open in tool →

#6e210c · #596e0c

#6e0c59 · #6e520c · #0c6e21

Contrast

#0c286e as textRatioAAAA largeAAAFix
Aaon white
13.6:1passpasspassPasses AAA — no fix needed.
Aaon black
1.54:1failfailfail
  • AA: use #3e6fea as the text (4.67:1)
  • AAA: use #7195ef as the text (7.25:1)
  • AA: or shift the background to #969696 (4.6:1)
  • AAA: or shift the background to #bababa (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0c286e as the background.

Brands using this color

Fonts for this mood

#0c286e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0c286e
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 #0c286e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0c286e-9ca3c4-df704e-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