Contrast
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This is an example of contrasting surfaces helping to show the pathway through a shopping area. The asphalt contrasts with tiling delineating the footpath area from the street dining area.
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“My vision is such that in certain light conditions it is useless trying to use my vision at all, so contrast is important to me. In these situations, when light is insufficient, a contrast such as a different texture or color is great. It is much easier to find a door if it is painted a different color to its surroundings. That makes a power of difference. I also have been known to try to walk through a clear glass wall simply because I did not see it. That is why the application of some paint on to the glass is good. It is embarrassing if you are found trying to walk through a glass wall when the door is just to your left or right.”
- Guide Dogs Client
Contrast is the difference between one thing and another. For people with impaired vision, contrast clues are useful for independent travel. Contrast can also provide clues about hazards.
Contrast enables people to identify:
- Changes in level or slope
- Unusual hazards
- The most straightforward path through an open space
- The location of a specific destination
Contrast exists in different forms. Luminance, colour and textural contrast are the main types.