Color

#4e12f3

#4e12f3
hex#4e12f3
rgbrgb(78, 18, 243)
hslhsl(256, 90%, 51%)
oklchoklch(0.475 0.281 278.8)
Closest name: Blustering Blue (#4411ff)Relative luminance 0.0852

Colors that go with #4e12f3

Charcoal, Cobalt Blue and Cornflower Blue 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 →

#b7f312

#1246f3 · #be12f3

#f34e12 · #12f34e

Split-complementary

Open in tool →

#f3be12 · #46f312

#f31246 · #b7f312 · #12f3be

Contrast

#4e12f3 as textRatioAAAA largeAAAFix
Aaon white
7.76:1passpasspassPasses AAA — no fix needed.
Aaon black
2.7:1failfailfail
  • AA: use #8055f6 as the text (4.55:1)
  • AAA: use #a181f8 as the text (7.01:1)
  • AA: or shift the background to #c7c7c7 (4.59:1)
  • AAA: or shift the background to #f5f5f5 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4e12f3 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

#4e12f3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4e12f3
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 #4e12f3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4e12f3-ab9cc4-dfbf4e-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