Do you see the difference in the two drops? The one on the right is from the gallon I just purchased. The one on the left is from the sample I tested. Those sample jars from Behr are 1/16th of a gallon. If I multiplied that sample formula x 16, it should match the gallon. It doesn't. Because they can't break down the tint (for samples) into small enough increments, the gallon could be off and it is. The LL tint (raw umber) is 58 and to match the sample it should be 56, hence the yellowish white that I did not want and a major color change.
So if you find a white or very light sample of paint, DO NOT have them mix it from the formula in the computer. Work out the tint numbers from your sample label depending on the ounces (or have the store do it) for a manual mix and it will be exactly what you expected. No returns since the formula is for the color I requested. No choice but to purchase another gallon with a reduction in the umber, and then mix the two gallons together. That makes it easy for me to decide that this white will be all of the trim, even second story, I certainly have enough of it! No more looking at samples and seeing pink or yellow, no more little jars everywhere. I throw them all into a container, mix, and use as first coats since the whites are similar. This discrepancy probably doesn't matter in colors as much, but one or two drops of tint in white certainly does. If you can see a difference in just a dab of the paint, imagine the effect on a wall.
Have a great Sunday!! I should be home from the birthday party in time for the sale.
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