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 #515551 is the color #555155

The HSL model was used to determine the complementary color

Input Color

HEX #515551
RGB 81, 85, 81
CMYK 5%, 0%, 5%, 67%
HSL 120°, 2.41%, 32.55%

Complementary Color

HEX #555155
RGB 85, 81, 85
CMYK 0%, 5%, 0%, 67%
HSL 300°, 2.41%, 32.55%

Complementary color scheme

#555155

#555151

#555551

#515551

#515555