Quick questions on Elements of design explained: O-Level Design Studies

A line is a mark with length and direction. Lines define edges and shapes, divide space, connect or separate parts of a layout, and lead the eye. Their character carries meaning: thick lines feel bold and stable, thin lines feel delicate, horizontal lines feel calm, vertical lines feel formal and upright, and diagonal or curved lines feel dynamic and full of movement.

Colour is the element with the strongest immediate impact. It attracts attention, sets a mood, and signals meaning (red for warning or energy, blue for calm or trust). Colour has three properties: hue (the colour itself, such as red or green), saturation or intensity (how pure or dull it is), and value or tone (how light or dark it is). Colour is explored in depth in its own dot point.

Texture is the surface quality of a design, the way it looks or feels. Actual texture is physical and can be touched, like embossed paper or a rough finish. Visual texture is the illusion of texture created with pattern, mark-making or photography on a flat surface. Texture adds richness, suggests materials, and creates contrast between busy and smooth areas.

Space is the area within and around the elements of a design. Positive space is occupied by the subject; negative space is the empty area around and between subjects. Skilful use of negative space gives a design room to breathe, creates emphasis by isolating an element, and can itself form shapes (the arrow hidden between two letters is a famous trick). Space also includes the illusion of depth, created with overlap, scale and perspective.