Color

#0463fb

#0463fb
hex#0463fb
rgbrgb(4, 99, 251)
hslhsl(217, 97%, 50%)
oklchoklch(0.555 0.239 261.2)
Closest name: Blue Ribbon (#0066ff)Relative luminance 0.1591

Colors that go with #0463fb

Crimson, Orange Red and Slate Gray 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 →

#fb9c04

#04defb · #2104fb

#fb0463 · #63fb04

Split-complementary

Open in tool →

#fb2104 · #defb04

#fb04de · #fb9c04 · #04fb21

Contrast

#0463fb as textRatioAAAA largeAAAFix
Aaon white
5.02:1passpassfail
  • AAA: use #034fc9 as the text (7.08:1)
Aaon black
4.18:1failpassfail
  • AA: use #136cfb as the text (4.57:1)
  • AAA: use #5495fc as the text (7.08:1)
  • AA: or shift the background to #f5f5f5 (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0463fb as the background.

Brands using this color

Fonts for this mood

#0463fb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0463fb
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 #0463fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0463fb-9ca7c4-df624e-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