Colour Proportion and its effects

It was already apparent the importance of hue, saturation, value etc when creating a colour scheme but the proportion and relation of a colour in a composition also influences heavily the type of mood and impact the image has. 

A way of explaining and experimenting with the effectiveness of colour proportion is to use a colour palette in the way of having a Dominant, Sub-Dominant and Accent Colour(s).  The largest area being the dominant colour and the smallest being the accent colour, usually a contrasting colour, differing in hue, intensity or saturation. 

Depending on the choice of dominant color, the feeling of the composition, and even the appearance of each color, is altered.  

Proportion & Intensity: http://www.worqx.com/color/color_proportion.htm