Twin Suns Yellow vs Highlight Skin

How close are they?

ΔE 20.9, loose: different enough that you should pick on purpose. Highlight Skin is a little lighter, much more muted, warmer than Twin Suns Yellow.

Can I use Highlight Skin instead of Twin Suns Yellow?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Highlight Skin is a little lighter, much more muted, warmer than Twin Suns Yellow.

Can I use Twin Suns Yellow instead of Highlight Skin?

The same difference applies the other way round: Twin Suns Yellow 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.