Heavenly Sky in Behr

The closest Behr paint to Vista Paint Heavenly Sky (0618) is Ocean Ridge 580D-5, a delta-E of 1.95 away — close enough to swap without anyone noticing, though a large sample in daylight will show the difference.

Light reflectance is effectively identical, 28.0 against 28.0. Undertone reads as blue against blue, at chroma 19.9 and 21.6.

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.