Color

#0c4ec0

#0c4ec0
hex#0c4ec0
rgbrgb(12, 78, 192)
hslhsl(218, 88%, 40%)
oklchoklch(0.463 0.189 261.2)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0933

Colors that go with #0c4ec0

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 →

#c07e0c

#0ca8c0 · #240cc0

#c00c4e · #4ec00c

Split-complementary

Open in tool →

#c0240c · #a8c00c

#c00ca8 · #c07e0c · #0cc024

Contrast

#0c4ec0 as textRatioAAAA largeAAAFix
Aaon white
7.33:1passpasspassPasses AAA — no fix needed.
Aaon black
2.87:1failfailfail
  • AA: use #226ef1 as the text (4.57:1)
  • AAA: use #5c94f5 as the text (7.01:1)
  • AA: or shift the background to #cccccc (4.56:1)
  • AAA: or shift the background to #fafafa (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0c4ec0 as the background.

Brands using this color

Fonts for this mood

#0c4ec0 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0c4ec0
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 #0c4ec0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0c4ec0-9ca6c4-df644e-201f2d-e9f0f1?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