or Chroma. Hue is the common name of the colour. Spectrum specifies the seven colours as VIBGYOR. To understand colour from a design point of view, reference is made to the Munsell’s Colour Wheel.
This divides colours as; Primary colours : These cannot be produced by mixing any other colour. These are red, yellow and blue (refer circles in the Fig. . ).
Secondary colours : These are made by mixing two primary colours — orange, green and violet (squares in the Fig. . ). Tertiary or intermediates: These are made by mixing one primary and one secondary colour, lying adjacent to each other on the colour wheel.
Thus we have red-orange, yellow-orange, yellow-green, blue-green, blue-purple and red-purple (the small triangles in the Fig. . ). Apart from these there are the groups known as neutral colours such as white, black, grey, silver and metallics.
These are called achromatics, i.e., colours without colour. The common colour wheel shows colours in their purest form and fullest intensity. primary primary primary tertiary tertiary tertiary tertiary tertiary tertiary secondary secondary secondary Fig. .
: Colour Wheel Value describes lightness or darkness of a hue, which is referred to as tint or shade. White has maximum value, while black has the least. Grey Scale and Value Chart are ( – ) grades scale for judging value. It shows for black, for white and as the mid value for grey or hue.
When the hue approaches white, it is a tint; when it approaches black it is a shade. Grey Scale also helps us to judge the equivalent value of any hue. BLACK GREY WHITE S H A D E HUE T I N T S Fig. .
: Grey Scale Shades ( – ) Dark Value Tints ( – ) Light Value Fig. . : Colour Shades & Tints Chroma or intensity is the brightness or purity of colour. Dullness results when the colour is blended with other colour, specifically with the colour opposite to it on