The invention relates to a hydrocarbon blend for input to a refinery and comprising a first blend component containing a renewable hydrocarbon component and a second blend component containing petroleum derived hydrocarbon to form at least part of a final hydrocarbon blend for processing in a refinery where the first blend component is characterized by comprising a hydrocarbon substance with at least 70% by weight having a boiling point above 220° C. and by having the characteristics (δd1, δρ1, δh1)=(17-20, 6-12, 6-12) and; where the second blend component is characterised by having the characteristics (δ{acute over (α)}2, δρ2, δh2)=(17-20, 3-5, 4-7), where the first blend component is present in the final hydrocarbon blend in a relative amount of up to 80 wt %.