Color

#0148cb

#0148cb
hex#0148cb
rgbrgb(1, 72, 203)
hslhsl(219, 99%, 40%)
oklchoklch(0.46 0.212 262)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0895

Colors that go with #0148cb

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 →

#cb8401

#01adcb · #1f01cb

#cb0148 · #48cb01

Split-complementary

Open in tool →

#cb1f01 · #adcb01

#cb01ad · #cb8401 · #01cb1f

Contrast

#0148cb as textRatioAAAA largeAAAFix
Aaon white
7.53:1passpasspassPasses AAA — no fix needed.
Aaon black
2.79:1failfailfail
  • AA: use #1b6afe as the text (4.54:1)
  • AAA: use #5d95fe as the text (7.2:1)
  • AA: or shift the background to #c9c9c9 (4.54:1)
  • AAA: or shift the background to #f7f7f7 (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 #0148cb as the background.

Brands using this color

Fonts for this mood

#0148cb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0148cb
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 #0148cb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0148cb-9ca5c4-df664e-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