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 #1B2D3C is the color #3C2A1B

The HSL model was used to determine the complementary color

Input Color

HEX #1B2D3C
RGB 27, 45, 60
CMYK 55%, 25%, 0%, 76%
HSL 207.27°, 37.93%, 17.06%

Complementary Color

HEX #3C2A1B
RGB 60, 42, 27
CMYK 0%, 30%, 55%, 76%
HSL 27.27°, 37.93%, 17.06%

Complementary color scheme

#3C2A1B

#2D3C1B

#1B3C2A

#1B2D3C

#2A1B3C