Color

#043cf6

#043cf6
hex#043cf6
rgbrgb(4, 60, 246)
hslhsl(226, 97%, 49%)
oklchoklch(0.486 0.274 264.1)
Closest name: C64 Blue (#003aff)Relative luminance 0.0991

Colors that go with #043cf6

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 →

#f6be04

#04b6f6 · #4404f6

#f6043c · #3cf604

Split-complementary

Open in tool →

#f64404 · #b6f604

#f604b6 · #f6be04 · #04f644

Contrast

#043cf6 as textRatioAAAA largeAAAFix
Aaon white
7.04:1passpasspassPasses AAA — no fix needed.
Aaon black
2.98:1failfailfail
  • AA: use #3b68fc as the text (4.57:1)
  • AAA: use #7293fd as the text (7.31:1)
  • AA: or shift the background to #cfcfcf (4.52:1)
  • AAA: or shift the background to #ffffff (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #043cf6 as the background.

Brands using this color

Fonts for this mood

#043cf6 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #043cf6
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 #043cf6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/043cf6-9ca1c4-df774e-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