Color

#0555eb

#0555eb
hex#0555eb
rgbrgb(5, 85, 235)
hslhsl(219, 96%, 47%)
oklchoklch(0.515 0.236 262.2)
Closest name: Blue Ribbon (#0066ff)Relative luminance 0.1253

Colors that go with #0555eb

Charcoal, Crimson and Amber 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 →

#eb9a05

#05c8eb · #2705eb

#eb0555 · #55eb05

Split-complementary

Open in tool →

#eb2705 · #c8eb05

#eb05c8 · #eb9a05 · #05eb27

Contrast

#0555eb as textRatioAAAA largeAAAFix
Aaon white
5.99:1passpassfail
  • AAA: use #044cd2 as the text (7.07:1)
Aaon black
3.51:1failpassfail
  • AA: use #1e6bfa as the text (4.54:1)
  • AAA: use #5a93fc as the text (7.01:1)
  • AA: or shift the background to #e0e0e0 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0555eb as the background.

Brands using this color

Fonts for this mood

#0555eb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0555eb
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 #0555eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0555eb-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