The word 'monochromatic' literally means 'one colour', but this doesn't necessarily mean using a single shade to decorate an entire room!
Instead, monochromatic interior design typically refers to using different shades, tones, and tints to generate different hues, effectively broadening the impact of a single colour.

That's a great clarification! Monochromatic interior design isn't about using just one shade, but rather employing various shades, tones, and tints of a single color to create depth and visual interest in a space.