Color

#043eec

#043eec
hex#043eec
rgbrgb(4, 62, 236)
hslhsl(225, 97%, 47%)
oklchoklch(0.478 0.261 263.9)
Closest name: C64 Blue (#003aff)Relative luminance 0.0953

Colors that go with #043eec

Slate Gray, Olive Green and Charcoal 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.

Real palettes that use #043eec

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ecb204

#04b2ec · #3e04ec

#ec043e · #3eec04

Split-complementary

Open in tool →

#ec3e04 · #b2ec04

#ec04b2 · #ecb204 · #04ec3e

Contrast

#043eec as textRatioAAAA largeAAAFix
Aaon white
7.23:1passpasspassPasses AAA — no fix needed.
Aaon black
2.91:1failfailfail
  • AA: use #3668fc as the text (4.54:1)
  • AAA: use #6d91fd as the text (7.12:1)
  • AA: or shift the background to #cccccc (4.5:1)
  • AAA: or shift the background to #fcfcfc (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 #043eec 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

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

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

tool url/palettes/new/043eec-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