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 #213131 is the color #312121

The HSL model was used to determine the complementary color

Input Color

HEX #213131
RGB 33, 49, 49
CMYK 33%, 0%, 0%, 81%
HSL 180°, 19.51%, 16.08%

Complementary Color

HEX #312121
RGB 49, 33, 33
CMYK 0%, 33%, 33%, 81%
HSL 0°, 19.51%, 16.08%

Complementary color scheme

#312121

#313121

#213121

#213131

#212131