Color

#045be7

#045be7
hex#045be7
rgbrgb(4, 91, 231)
hslhsl(217, 97%, 46%)
oklchoklch(0.522 0.224 261.1)
Closest name: Blue Ribbon (#0066ff)Relative luminance 0.1328

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e79004

#04cde7 · #1e04e7

#e7045b · #5be704

Split-complementary

Open in tool →

#e71e04 · #cde704

#e704cd · #e79004 · #04e71e

Contrast

#045be7 as textRatioAAAA largeAAAFix
Aaon white
5.74:1passpassfail
  • AAA: use #034fc9 as the text (7.08:1)
Aaon black
3.66:1failpassfail
  • AA: use #136cfb as the text (4.57:1)
  • AAA: use #5495fc as the text (7.08:1)
  • AA: or shift the background to #e6e6e6 (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #045be7 as the background.

Brands using this color

Fonts for this mood

#045be7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #045be7
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #045be7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/045be7-9ca7c4-df624e-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