Color

#004ef5

#004ef5
hex#004ef5
rgbrgb(0, 78, 245)
hslhsl(221, 100%, 48%)
oklchoklch(0.512 0.255 262.9)
Closest name: C64 Blue (#003aff)Relative luminance 0.1204

Tints & shades

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

Harmonies

Complementary

Open in tool →

#f5a700

#00c8f5 · #2d00f5

#f5004e · #4ef500

Split-complementary

Open in tool →

#f52d00 · #c8f500

#f500c8 · #f5a700 · #00f52d

Contrast

#004ef5 as textRatioAAAA largeAAAFix
Aaon white
6.16:1passpassfail
  • AAA: use #0047e0 as the text (7.05:1)
Aaon black
3.41:1failpassfail
  • AA: use #2469ff as the text (4.54:1)
  • AAA: use #6193ff as the text (7.13:1)
  • AA: or shift the background to #dedede (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #004ef5 as the background.

Brands using this color

Fonts for this mood

#004ef5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #004ef5
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 #004ef5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/004ef5-9ca4c4-df6b4e-211f2d-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