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 #666A71 is the color #716D66

The HSL model was used to determine the complementary color

Input Color

HEX #666A71
RGB 102, 106, 113
CMYK 10%, 6%, 0%, 56%
HSL 218.18°, 5.12%, 42.16%

Complementary Color

HEX #716D66
RGB 113, 109, 102
CMYK 0%, 4%, 10%, 56%
HSL 38.18°, 5.12%, 42.16%

Complementary color scheme

#716D66

#6A7166

#66716D

#666A71

#6D6671