Color

#0451cd

#0451cd
hex#0451cd
rgbrgb(4, 81, 205)
hslhsl(217, 96%, 41%)
oklchoklch(0.48 0.203 261)
Closest name: Denim (#2243b6)Relative luminance 0.1032

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cd8004

#04b5cd · #1c04cd

#cd0451 · #51cd04

Split-complementary

Open in tool →

#cd1c04 · #b5cd04

#cd04b5 · #cd8004 · #04cd1c

Contrast

#0451cd as textRatioAAAA largeAAAFix
Aaon white
6.85:1passpassfail
  • AAA: use #044fc8 as the text (7.1:1)
Aaon black
3.06:1failpassfail
  • AA: use #146cfa as the text (4.56:1)
  • AAA: use #5595fc as the text (7.09:1)
  • AA: or shift the background to #d4d4d4 (4.62:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0451cd 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

#0451cd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0451cd
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 #0451cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0451cd-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