ΔE 24.6, loose: different enough that you should pick on purpose. Orchid Light is a little lighter, much more muted, warmer than Cerulean Blue, Chromium.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 25). Orchid Light is a little lighter, much more muted, warmer than Cerulean Blue, Chromium.
The same difference applies the other way round: Cerulean Blue, Chromium is a little darker, much more saturated, cooler.
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 Cerulean Blue, Chromium on the colour wheel See Orchid Light on the colour wheel
All matches: Cerulean Blue, Chromium equivalents · Orchid Light equivalents