1. Reflection from Background Colour
- If the background colour is stronger than the small piece of sample, the small sample tends to pick up the reflectance from the background colour (e.g. Red in background, sample in shade of white, then the sample tends to appear white with reddish tone).
2. Different Light Source
- Different light sources with different wavelengths will give you different colour (e.g. Colour judge under natural light source such as day light when compared to the same colour judged under artificial light, incandescent light or even fluorescent light, will be very different.
3. Different Gloss Level
- Higher gloss level paint will look darker than the lower gloss level paint. Therefore, the same colour will appear to be slightly different over the range of products produced in differing gloss levels.
4. Different Thickness (Semi-Transparent Colour)
- Bright colours with organic pigment content will give you a poor hiding power compared to colours produced with natural earth pigments. Hence, the thickness of the paint film can affect the colour. The thicker it is, the darker/stronger the colour will be.
5. Different Application Methods
- There is a light variation in colour if shade card is compared to actual paint film. This is due to different application methods. Shade card is printing process and coating is applied using brush, roller or spray gun. Therefore, there is no 100% match to different application methods.
- It is always wise to keep at least a small amount of every paint colour and finishing products for touch up purposes. This is to avoid cumbersome problems that may arise during touch up especially those colour or product which might not be available in small quantity.
- Paint deep pattern surfaces with a stiff-bristled brush to help in penetration.