Tableau sequential colour gradient palettes (continuous)

library(scales)
x <- seq(0, 1, length = 25)
show_col(tableau_seq_gradient_pal('Red')(x))

plot of chunk tableau_seq_gradient_pal

show_col(tableau_seq_gradient_pal('Blue')(x))

plot of chunk tableau_seq_gradient_pal

show_col(tableau_seq_gradient_pal('Purple Sequential')(x))

plot of chunk tableau_seq_gradient_pal