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 #66FFFF is the color #FF6666

The HSL model was used to determine the complementary color

Input Color


HEX #66FFFF
RGB 102, 255, 255
CMYK 60%, 0%, 0%, 0%
HSL 180°, 100%, 70%

Complementary Color


HEX #FF6666
RGB 255, 102, 102
CMYK 0%, 60%, 60%, 0%
HSL 0°, 100%, 70%

Complementary color scheme

#FF6666
#FFFF66
#66FF66
#66FFFF
#6666FF