Hi,
Based on your reference image, it seems like it has only 2 colours, namely White and Dark gray. The yellowish lights make it look like off white/beige in some areas.
You can also add some textures to create variations when exposed to different lightings.
I hope this was helpful.

Regards
WEIRD

Where ever there is brown go for grey colour, rest is white make sure pergola is

Can you please suggest color code for both

@SaAsh design studio how about Asian 8255 Stone Path color for dark grey. What colour should we do for pergola?

L152 seems yellowish in colour where as photo seems white.

As per 2nd pic , go for white and grey paint