Color

#0542fa

#0542fa
hex#0542fa
rgbrgb(5, 66, 250)
hslhsl(225, 96%, 50%)
oklchoklch(0.499 0.273 264)
Closest name: C64 Blue (#003aff)Relative luminance 0.1083

Colors that go with #0542fa

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 →

#fabd05

#05bdfa · #4205fa

#fa0542 · #42fa05

Split-complementary

Open in tool →

#fa4205 · #bdfa05

#fa05bd · #fabd05 · #05fa42

Contrast

#0542fa as textRatioAAAA largeAAAFix
Aaon white
6.63:1passpassfail
Aaon black
3.17:1failpassfail
  • AA: use #3768fb as the text (4.54:1)
  • AAA: use #6e92fc as the text (7.18:1)
  • AA: or shift the background to #d6d6d6 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0542fa as the background.

Brands using this color

Fonts for this mood

#0542fa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0542fa
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 #0542fa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0542fa-9ca1c4-df754e-221f2d-e9eff1?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