Color

#1045f4

#1045f4
hex#1045f4
rgbrgb(16, 69, 244)
hslhsl(226, 91%, 51%)
oklchoklch(0.498 0.262 264.4)
Closest name: C64 Blue (#003aff)Relative luminance 0.109

Colors that go with #1045f4

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 →

#f4bf10

#10b7f4 · #4d10f4

#f41045 · #45f410

Split-complementary

Open in tool →

#f44d10 · #b7f410

#f410b7 · #f4bf10 · #10f44d

Contrast

#1045f4 as textRatioAAAA largeAAAFix
Aaon white
6.6:1passpassfail
  • AAA: use #0b40ef as the text (7.01:1)
Aaon black
3.18:1failpassfail
  • AA: use #416bf6 as the text (4.66:1)
  • AAA: use #7291f8 as the text (7.12:1)
  • AA: or shift the background to #d6d6d6 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1045f4 as the background.

Brands using this color

Fonts for this mood

#1045f4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1045f4
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 #1045f4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1045f4-9ca1c4-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