Colour and contrast — Design, 7–10 years
Designers use differences in colour and lightness to help people notice, read and find things.
Make important things stand out
Contrast means that two things look noticeably different, such as dark writing on a pale page. Designers use it to show what matters first: a button, a warning, a path or a word. Colour can help, but contrast also comes from light and dark, size, shape or spacing.
The problem contrast solves
A page or sign can contain the right information and still be hard to use if everything looks equally important. People then miss a warning, lose their place while reading or press the wrong control. Designers learned to separate information visually so eyes can find the next useful thing quickly.
Example: a clear lost-and-found sign
A class makes a sign saying where lost items go. First, it writes “LOST ITEMS” in large, dark letters on a pale background. Next, it puts the room number in a bright box with plenty of empty space around it. Then, it adds a simple arrow. The important words now stand out before the smaller instructions.
The colour mistake
A reasonable mistake is to use red and green as the only way to show two choices. It seems clear because many signs use these colours, but some people cannot tell them apart, and dim light changes how colours look. Add words, shapes or symbols, and make sure light and dark are different too.
Contrast outside school
Contrast helps on road signs, bus maps, phone screens, medicine labels and shop displays. A white line on a dark staircase can show where a step begins, while bold writing can make a price easier to spot. Good contrast helps people notice; it does not replace clear words or sensible layout.
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