ΔE 9.9, close: similar, with a visible difference side by side. Translucent Yellow is a little lighter, more saturated than Sunpetal.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Translucent Yellow is a little lighter, more saturated than Sunpetal.
The same difference applies the other way round: Sunpetal is a little darker, more muted.
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.
See Sunpetal on the colour wheel See Translucent Yellow on the colour wheel
All matches: Sunpetal equivalents · Translucent Yellow equivalents