Prairie Sky in Vista Paint

The closest Vista Paint paint to Behr Prairie Sky (S510-1) is Simple Serenity 0614, a delta-E of 1.71 away — close enough to swap without anyone noticing, though a large sample in daylight will show the difference.

Simple Serenity is 2 LRV points lighter, so the room will read slightly brighter. Undertone reads as blue undertone against blue undertone, at chroma 8.3 and 7.5.

Codes are not transferable between manufacturers and no brand publishes a conversion table, so every figure here is measured from the published hex values rather than taken from a chart.