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 #123240 is the color #402012

The HSL model was used to determine the complementary color

Input Color


HEX #123240
RGB 18, 50, 64
CMYK 72%, 22%, 0%, 75%
HSL 198.26°, 56.1%, 16.08%

Complementary Color


HEX #402012
RGB 64, 32, 18
CMYK 0%, 50%, 72%, 75%
HSL 18.26°, 56.1%, 16.08%

Complementary color scheme

#402012
#324012
#124020
#123240
#201240