ΔE 7.7, close: similar, with a visible difference side by side. Marigold Yellow is a little lighter than Gryph-Hound Orange. They are different kinds of paint: Citadel Gryph-Hound Orange is a one-coat contrast-style paint and Reaper Marigold Yellow is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Marigold Yellow is a little lighter than Gryph-Hound Orange. They are different kinds of paint.
The same difference applies the other way round: Gryph-Hound Orange is a little darker.
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 Gryph-Hound Orange on the colour wheel See Marigold Yellow on the colour wheel
All matches: Gryph-Hound Orange equivalents · Marigold Yellow equivalents