Color

#045fe7

#045fe7
hex#045fe7
rgbrgb(4, 95, 231)
hslhsl(216, 97%, 46%)
oklchoklch(0.53 0.219 260.5)
Closest name: Blue Ribbon (#0066ff)Relative luminance 0.1398

Colors that go with #045fe7

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 →

#e78c04

#04d0e7 · #1a04e7

#e7045f · #5fe704

Split-complementary

Open in tool →

#e71a04 · #d0e704

#e704d0 · #e78c04 · #04e71a

Contrast

#045fe7 as textRatioAAAA largeAAAFix
Aaon white
5.53:1passpassfail
  • AAA: use #0350c4 as the text (7.12:1)
Aaon black
3.8:1failpassfail
  • AA: use #0e6dfb as the text (4.6:1)
  • AAA: use #5497fc as the text (7.21:1)
  • AA: or shift the background to #e8e8e8 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #045fe7 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#045fe7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #045fe7
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 #045fe7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/045fe7-9ca7c4-df5f4e-201f2d-e9f0f1?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