How to determine complementary colors?
What are the different color models?

Determine Complementary Color

140 color names
216 web safe colors
2040 RAL colors
200 shades of gray

The complementary color of #66CC00 is the color #6600CC

The HSL model was used to determine the complementary color

Input Color


HEX #66CC00
RGB 102, 204, 0
CMYK 50%, 0%, 100%, 20%
HSL 90°, 100%, 40%

Complementary Color


HEX #6600CC
RGB 102, 0, 204
CMYK 50%, 100%, 0%, 20%
HSL 270°, 100%, 40%

Complementary color scheme

#6600CC
#CC0066
#CC6600
#66CC00
#00CC66