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 #12101A is the color #181A10

The HSL model was used to determine the complementary color

Input Color

HEX #12101A
RGB 18, 16, 26
CMYK 31%, 38%, 0%, 90%
HSL 252°, 23.81%, 8.24%

Complementary Color

HEX #181A10
RGB 24, 26, 16
CMYK 8%, 0%, 38%, 90%
HSL 72°, 23.81%, 8.24%

Complementary color scheme

#181A10

#101A12

#10181A

#12101A

#1A1018