Radiation Glow vs Raw Sienna

How close are they?

ΔE 14.7, fair: the same colour family, but not a straight swap. Raw Sienna is a little darker, more muted than Radiation Glow.

Can I use Raw Sienna instead of Radiation Glow?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Raw Sienna is a little darker, more muted than Radiation Glow.

Can I use Radiation Glow instead of Raw Sienna?

The same difference applies the other way round: Radiation Glow is a little lighter, more saturated.

ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.