Color

#0063cc

#0063cc
hex#0063cc
rgbrgb(0, 99, 204)
hslhsl(211, 100%, 40%)
oklchoklch(0.515 0.181 256.7)
Closest name: God of Rain (#4466cc)Relative luminance 0.1328

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cc6900

#00c9cc · #0300cc

#cc0063 · #63cc00

Split-complementary

Open in tool →

#cc0300 · #c9cc00

#cc00c9 · #cc6900 · #00cc03

Contrast

#0063cc as textRatioAAAA largeAAAFix
Aaon white
5.74:1passpassfail
  • AAA: use #0056b3 as the text (7.04:1)
Aaon black
3.66:1failpassfail
  • AA: use #0071eb as the text (4.56:1)
  • AAA: use #3898ff as the text (7.1:1)
  • 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 #0063cc as the background.

Brands using this color

Fonts for this mood

#0063cc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0063cc
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 #0063cc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0063cc-9cabc4-df534e-1f202d-e9f1f1?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