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 #81868C is the color #8C8781

The HSL model was used to determine the complementary color

Input Color

HEX #81868C
RGB 129, 134, 140
CMYK 8%, 4%, 0%, 45%
HSL 212.73°, 4.56%, 52.75%

Complementary Color

HEX #8C8781
RGB 140, 135, 129
CMYK 0%, 4%, 8%, 45%
HSL 32.73°, 4.56%, 52.75%

Complementary color scheme

#8C8781

#868C81

#818C87

#81868C

#87818C