Here You can set color in RGB color model and watch at complimentary colors at bottom of the page or just click random color.
Basic color:
#4f1a1e; rgb(79,26,30); hsl(354,50%,21%);
black
black
white
white
Complementary colors:
Analogous harmony (H+30):
#50301b; rgb(80,48,27); hsl(24,50%,21%);
black
black
white
white
Analogous harmony (H-30):
#501b3a; rgb(80,27,58); hsl(324,50%,21%);
black
black
white
white
Triadic harmony (H+120):
#20501b; rgb(32,80,27); hsl(114,50%,21%);
black
black
white
white
Triadic harmony (H-120):
#1b2050; rgb(27,32,80); hsl(234,50%,21%);
black
black
white
white
Split complements harmony (H+150):
#1b5031; rgb(27,80,49); hsl(144,50%,21%);
black
black
white
white
Split complements harmony (H-150):
#1b3a50; rgb(27,58,80); hsl(204,50%,21%);
black
black
white
white
Complement harmony (H+180):
#1b504b; rgb(27,80,75); hsl(174,50%,21%);
black
black
white
white
Monochromatic harmony (S+30):
#600b12; rgb(96,11,18); hsl(354,80%,21%);
black
black
white
white
Monochromatic harmony (S-30):
#402b2d; rgb(64,43,45); hsl(354,20%,21%);
black
black
white
white
Monochromatic harmony (L+10):
#77282e; rgb(119,40,46); hsl(354,50%,31%);
black
black
white
white
Monochromatic harmony (L-10):
#2a0e10; rgb(42,14,16); hsl(354,50%,11%);
black
black
white
white