The Crucifixion, 14th century
Master of the Codex of Saint George (Italian [Florentine],
Italian;
Tempera on wood, tooled gold ground
The Adoration of the Shepherds, shortly after 1450
Andrea Mantegna (Italian, Paduan, born no later than 1430, died 1506)
Tempera on canvas, transferred from wood

Medieval palette:

blue - ultramarine and azurite, red - vermillion, cinnabar & red lead, "yellow" - gold leaf and orpiment, white - lead white, green - verdigris (copper acetate), red-orange - realgar

more "lake" pigments from natural dyes on ground white mineral (marble, lime or white lead); indigo, turnsole, madder (plants), cochineal & kermes (insects)