Blend colors together using linear interpolation; also samples named ColorData gradient schemes
Blend[{col1, col2}, x]
Blend[{col1, col2, col3, …}, x]
Blend[{{x1, col1}, {x2, col2}, …}, x]
Blend[{col1, col2, …}, {u1, u2, …}]
Blend[{image1, image2, …}, …]
Blend[{Red, Blue}, 1 / 3]
→ RGBColor[2/3, 0, 1/3]Graphics[Table[{Blend[{Red, Blue}, x], Disk[{8x, 0}]}, {x, 0, 1, 1 / 8}]]
→ -Graphics-Plot3D[Sin[x + y ^ 2], {x, -3, 3}, {y, -2, 2}, ColorFunction -> (Blend[{Yellow, Purple}, #3]&)]
→ -Graphics3D-