Color

#0442fb

#0442fb
hex#0442fb
rgbrgb(4, 66, 251)
hslhsl(225, 97%, 50%)
oklchoklch(0.5 0.274 263.9)
Closest name: C64 Blue (#003aff)Relative luminance 0.1089

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#fbbd04

#04bdfb · #4204fb

#fb0442 · #42fb04

Split-complementary

Open in tool →

#fb4204 · #bdfb04

#fb04bd · #fbbd04 · #04fb42

Contrast

#0442fb as textRatioAAAA largeAAAFix
Aaon white
6.61:1passpassfail
  • AAA: use #043ff1 as the text (7.03:1)
Aaon black
3.18:1failpassfail
  • AA: use #3668fc as the text (4.54:1)
  • AAA: use #6d91fd as the text (7.12:1)
  • AA: or shift the background to #d6d6d6 (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0442fb as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#0442fb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0442fb
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #0442fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0442fb-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