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 #1B2128 is the color #28221B

The HSL model was used to determine the complementary color

Input Color

HEX #1B2128
RGB 27, 33, 40
CMYK 33%, 18%, 0%, 84%
HSL 212.31°, 19.4%, 13.14%

Complementary Color

HEX #28221B
RGB 40, 34, 27
CMYK 0%, 15%, 33%, 84%
HSL 32.31°, 19.4%, 13.14%

Complementary color scheme

#28221B

#21281B

#1B2822

#1B2128

#221B28