Color

#3e04fb

#3e04fb
hex#3e04fb
rgbrgb(62, 4, 251)
hslhsl(254, 97%, 50%)
oklchoklch(0.469 0.296 273.6)
Closest name: Overdue Blue (#4400ff)Relative luminance 0.0808

Colors that go with #3e04fb

Charcoal, Cobalt Blue and Crimson 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 →

#c1fb04

#0446fb · #b904fb

#fb3e04 · #04fb3e

Split-complementary

Open in tool →

#fbb904 · #46fb04

#fb0446 · #c1fb04 · #04fbb9

Contrast

#3e04fb as textRatioAAAA largeAAAFix
Aaon white
8.03:1passpasspassPasses AAA — no fix needed.
Aaon black
2.62:1failfailfail
  • AA: use #7b54fc as the text (4.52:1)
  • AAA: use #9e81fd as the text (7.01:1)
  • AA: or shift the background to #c2c2c2 (4.51:1)
  • AAA: or shift the background to #f0f0f0 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3e04fb 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

#3e04fb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3e04fb
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 #3e04fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3e04fb-aa9cc4-dfbb4e-291f2d-e9ebf1?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