Color

#0648cb

#0648cb
hex#0648cb
rgbrgb(6, 72, 203)
hslhsl(220, 94%, 41%)
oklchoklch(0.461 0.211 262.4)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0899

Colors that go with #0648cb

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 →

#cb8906

#06aacb · #2706cb

#cb0648 · #48cb06

Split-complementary

Open in tool →

#cb2706 · #aacb06

#cb06aa · #cb8906 · #06cb27

Contrast

#0648cb as textRatioAAAA largeAAAFix
Aaon white
7.51:1passpasspassPasses AAA — no fix needed.
Aaon black
2.8:1failfailfail
  • AA: use #256cf8 as the text (4.58:1)
  • AAA: use #6194fa as the text (7.12:1)
  • AA: or shift the background to #c9c9c9 (4.53:1)
  • AAA: or shift the background to #f7f7f7 (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 #0648cb as the background.

Brands using this color

Fonts for this mood

#0648cb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0648cb
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 #0648cb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0648cb-9ca5c4-df694e-211f2d-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