Color

#0066cc

#0066cc
hex#0066cc
rgbrgb(0, 102, 204)
hslhsl(210, 100%, 40%)
oklchoklch(0.522 0.177 255.8)
Closest name: God of Rain (#4466cc)Relative luminance 0.1386

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cc6600

#00cccc · #0000cc

#cc0066 · #66cc00

Split-complementary

Open in tool →

#cc0000 · #cccc00

#cc00cc · #cc6600 · #00cc00

Contrast

#0066cc as textRatioAAAA largeAAAFix
Aaon white
5.57:1passpassfail
  • AAA: use #0057ad as the text (7.08:1)
Aaon black
3.77:1failpassfail
  • AA: use #0073e6 as the text (4.59:1)
  • AAA: use #3399ff as the text (7.14:1)
  • AA: or shift the background to #e8e8e8 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0066cc as the background.

Brands using this color

Fonts for this mood

#0066cc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0066cc
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 #0066cc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0066cc-9cabc4-df514e-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