Tertiary colours result from combining a primary colour with an adjacent secondary colour on the colour wheel.
They facilitate seamless transitions and expand the spectrum of shades for artistic and design applications.
Specific tertiary colours include red-orange, yellow-green, and blue-green.
These colours occupy the spaces between primary and secondary colours, contributing greater depth and variety.
Tertiary colours are crucial in makeup, fashion, and interior design for achieving aesthetic harmony and balance.