Working:
#C4C6BF
#C4C6BB;
red;
rgb(255,255,55,.5);
rgba(255, 0, 0, 0.5);
hsl(0deg, 100%, 50%);
hwb(12 50% 0%);
#C4C6BF;
cmyk(100%,50%,50%,50%);
hsva(360, 100%, 100%, 70%);
purple
This is a paragraph with a #C4C6BB; color code inside. This is another paragraph with a red color code inside.
This is a nested paragraph with a rgb(255,255,55,.5); color code inside.
This is a nested paragraph with a rgba(255, 0, 0, 0.5); color code inside.