| On standard blue wool scale from 1 (min) to 8 (max) after exposure to light, fabrics can be considered for light fastness as being: |
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sufficient minimum 4 |
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good minimum 5 |
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very good minimum 6 | |
| Colors as Rated using the Blue Wool Sample Rating at right |
Blue Wool Samples with Lightfastness Rating (with 7+ being top rating,0 being worst rating) |
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| Each color must be carefully selected for the degree of fastness wanted. Exposure to air and light will fade colors away: it is important to reduce exposure from the sun and moon rays. Lined draperies will resist better than unlined. |
