### Question 4

1. Identify five classes of colour.
2. Explain any two classes of colour identified in 4(a) above.
3. State three functions of colour.

### Observation

Identification of the classes of colour was not a threat to the candidates. A few of them went to the extent of listing than necessary to prove they knew them. Few of the candidates had problem with the explanation of some of the classes of colour identified.

They were expected to respond to the question in the following manner:

(a)        Primary colours, Secondary colours, Intermediate colours, Tertiary colours,

(b)        (i)         Primary colours:
They are referred to as basic colours that other colours derive their source. They are also independent of other colours. Examples are red, blue and yellow.

(ii)        Secondary colours:
It is the mixture of any two primary colours.
The mixture of red plus blue or the mixture of blue plus
Yellow will give a secondary colour.  Examples are:  red + blue =
purple/violet, red + yellow = orange, blue + yellow = green.

(iii)       Intermediate colours:
It is the mixture of any two secondary colours
E.g. the mixture of purple + orange = purple orange, purple + green =
purple green, orange + green = orange green.

(iv)       Tertiary colours:
It is the mixture of a primary and a secondary colour.
E.g. red + green= reddish green, blue + orange = bluish orange, yellow + purple = yellowish purple.

Complementary/Contrasting colours:

They are colours directly opposite each other in the colour wheel. E.g.
red is complementary to green, purple is complementary to yellow and orange is complementary to blue.

They are three colours that are at equal distance on the colour wheel. For example, red is triad to yellow, orange is triad to green and blue is triad to red etc.

Neutral/Natural colours:

These are colours that are naturally created. They produce the tints and shades of other colours. E.g. Grey, white and black.

They are colours that agree well with one another.  They are referred to as family colour because they have a sense of unity in them.

These are colours that have the effect of heat in them.  They are also referred to as advancing colours because they can be seen from a distance e.g. red, yellow, pink, orange etc.

Cool/Receding colours:

They are colours that are naturally cool in effect and calm when used. E.g. blue, purple/violet, green, etc.  They are called receding colours because they are not visible from a distance.

Monochrome:

It is the use of a single graded colour to produce a design. It is achieved by the use of white to produce a tint or the use of black to produce a shade of any colour.

Polychrome:

It is the use of two or more colours in a design or the use of multiple colours in an art work.

Tint:

It is the addition of a white pigment to any colour to create/produce a lighter/brighter hue/tone.

It is the addition of black pigment to any colour to create/produce a dark hue/tone.

(c)        Functions of Colour

1. It gives the effect of depth to a design.
2. It adds beauty to an art work.
3. It gives symbolic representation/mood of a situation.
4. It gives the effect of good finishing.
5. It adds life to an art work.
6. It brings out the design of an art work.
7. It creates movement and rhythm.
8. It adds value to an art work.
9. For communication.
10. For identification.
11. For therapy/diagnosis.