Module 10: Introduction to fundamental principles of colour, colour theory: hue, value, saturation, .................gray scale, cool and warm colour. Visual patterns, textures.
  Lecture 5:Visual weight of colour
 

Fig.154: Good contrast is necessary for readability.

If there isn't enough value difference, even if there is a difference in hue (colour), it will be hard to read text. See the fig.155 bellow.

Fig.155: Placing text on background with a wide range of values results in poor readability.

(The above lectures consist of illustrative examples in order to help understand the theory in a simple way followed by a range of hands-on assignments to enrich students manual skill and' understanding about the topic)