Color

#1043da

#1043da
hex#1043da
rgbrgb(16, 67, 218)
hslhsl(225, 86%, 46%)
oklchoklch(0.468 0.234 264.2)
Closest name: Brutally Blue (#0022dd)Relative luminance 0.0919

Colors that go with #1043da

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 →

#daa810

#10a8da · #4310da

#da1043 · #43da10

Split-complementary

Open in tool →

#da4310 · #a8da10

#da10a8 · #daa810 · #10da43

Contrast

#1043da as textRatioAAAA largeAAAFix
Aaon white
7.4:1passpasspassPasses AAA — no fix needed.
Aaon black
2.84:1failfailfail
  • AA: use #416df1 as the text (4.68:1)
  • AAA: use #7192f4 as the text (7.12:1)
  • AA: or shift the background to #cccccc (4.61:1)
  • AAA: or shift the background to #fafafa (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1043da as the background.

Brands using this color

Fonts for this mood

#1043da reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1043da
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 #1043da and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1043da-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