Flaming Forge Orange vs Sun Yellow

How close are they?

ΔE 11.8, fair: the same colour family, but not a straight swap. Sun Yellow is a little lighter, more saturated than Flaming Forge Orange.

Can I use Sun Yellow instead of Flaming Forge Orange?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Sun Yellow is a little lighter, more saturated than Flaming Forge Orange.

Can I use Flaming Forge Orange instead of Sun Yellow?

The same difference applies the other way round: Flaming Forge Orange 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.