Similar to the yellows used for school buses and taxis. Excellent lightfastness. Originating from the Williamsburg neighborhood of Brooklyn, over one hundred seventy artist quality oil colors are now made in New Berlin, NY. Each color is milled in small batches to provide a unique expression of each pigment used. For that reason, our paints are not homogeneous, as some colors require a very fine grind that results in a rich, smooth paint, while others are best allowed to retain more texture and provide a little more resistance and less gloss. Technical Detail Lightfastness rating Opacity / Transparency Semi-Opaque Drying Time Medium (2-7 days) Grind Very Fine Pigment Detail PY74 CI number:11741 Classification:Synthetic Organic Chemical Description:Arylide Yellow PY65 CI number:11740 Common name:Hansa yellow 65 Classification:Synthetic Inorganic Chemical Description:Arylide Yellow